This repository is your one‑stop roadmap for launching a successful career in Android development. Inside you’ll find:
- Official Google courses and certifications to build a rock‑solid foundation
- Top YouTube channels for both beginners and advanced practitioners
- Free and paid online classes that cover everything from Kotlin fundamentals to advanced app architecture
- Handpicked books to deepen your language and framework knowledge
- A visual learning roadmap to guide you through each stage of growth
- Practical tips and proven study strategies to keep you coding, refining, and iterating
- First app ideas, sorted by difficulty, to apply what you learn in real projects
- Active community links for instant support and networking
- UI/UX design resources to help craft beautiful, user‑friendly interfaces
- Must‑watch GitHub repositories featuring sample code, libraries, and interview prep
- Open-Source Android Apps showcasing full real-world projects to study architecture and best practices
Whether you’re just starting out or leveling up your existing skills, this curated collection will help you learn efficiently, build confidently, and connect with the Android developer ecosystem every step of the way.
- Official Google Courses
- YouTube Channels
- Online Courses
- Books
- Roadmap
- Practical Tips
- First App Ideas
- Community
- UI/UX Resources
- Useful GitHub Repositories
- Open-Source Android Apps
If you're just starting your journey, it's highly recommended to begin with Android Basics with Compose. This is the best course to start with because it's created by Google and completely free. No prior knowledge of Kotlin or Android development is required — the Google team will guide you through everything step-by-step with video lessons and interactive codelabs using Jetpack Compose, the modern toolkit for building Android UIs.
- Android Developers — the official channel from Google.
- Stevdza-San — well-structured tutorials focused on real-world Android development with Jetpack Compose, MVVM, Clean Architecture, Firebase, and modern Android practices. Great for both beginners and intermediate developers looking to build complete apps.
- Easy Tuto — beginner-friendly channel with step-by-step tutorials on Kotlin, Jetpack Compose, Firebase, and more. Clear explanations and complete app projects make it perfect for those just starting out.
- Philipp Lackner — high-quality tutorials on advanced Android topics such as Jetpack Compose, Clean Architecture, Dependency Injection, and testing. Great for developers who already know the basics and want to level up with real-world techniques and best practices.deep dives into architecture and modern practices.
- Jovche Mitrejchevski — Kotlin and Android tutorials with a focus on clean architecture, Jetpack Compose, and modern development techniques. Offers concise explanations and solid code examples.
- Master Coding — a growing channel with practical Kotlin and Android tutorials, including Jetpack Compose, Firebase integration, and full app builds. Suitable for beginners and intermediate learners.
- Kotlin Full Course – freeCodeCamp — a comprehensive 13-hour Kotlin course covering the fundamentals of the language, object-oriented programming, collections, functions, and more. Ideal for beginners and those switching from Java to Kotlin.
- Kotlin Crash Course 2025 – Philipp Lackner — an up-to-date Kotlin crash course for beginners that introduces the language in a concise and practical way. Great for getting started with Kotlin in 2025.
- Google Play Academy — Certificates & Training — official free certification courses from Google to help you understand app growth, store listing optimization, monetization, policy compliance, and more.
- Programming Fundamentals in Kotlin (Meta) — a short introductory course from Meta that covers the basics of Kotlin and object-oriented programming. Ideal for those new to Kotlin.
- Advanced Programming in Kotlin (Meta) — a short course by Meta covering advanced Kotlin topics including functional programming, generics, and more. Useful for strengthening your Kotlin foundation.
- Udemy: Android Development Courses — You can find a wide range of Android development courses on Udemy. Be sure to read the reviews and comments before purchasing, as some courses may be outdated or not clearly explained. However, there are also many high-quality courses available if you choose carefully.
- Kotlin in Action — a detailed and well-structured guide to mastering Kotlin. Ideal for both beginners and experienced developers who want to write idiomatic and efficient Kotlin code.
⚠️ Note: Jetpack Compose books can become outdated quickly as the framework evolves. As of 2025, Jetpack Compose 1.7 Essentials is one of the most up-to-date resources available.
- Jetpack Compose 1.7 Essentials — a practical book focused on building Android apps with Jetpack Compose, covering essential concepts and tools for creating modern UIs.
- Kotlin Cookbook — a collection of practical, problem-focused recipes for solving common Kotlin development challenges. Great for hands-on learners.
- Atomic Kotlin — a modular and example-rich introduction to Kotlin. Designed to build understanding step by step, perfect for both beginners and intermediate developers.
- Head First Kotlin — a visual and interactive guide to Kotlin that makes learning approachable and engaging through the Head First teaching method.
- Effective Kotlin — a collection of best practices for writing clean, efficient, and maintainable Kotlin code. Ideal for those who already know the basics and want to go deeper.
- The Joy of Kotlin — a deep dive into functional programming with Kotlin, helping you write safer and more expressive code through immutability and pure functions.
- Kotlin Language Documentation (PDF) — the official Kotlin documentation in downloadable PDF format. Great for offline reference and comprehensive coverage of language features.
- Android Roadmap on roadmap.sh — visual guide outlining the skills and tools you should learn in order to become an Android developer, from Kotlin basics to advanced architecture.
- skydoves/android-developer-roadmap — a community-maintained roadmap repository providing detailed paths, tutorials, and links for each stage of Android development.
When learning Android development, practice is everything. Reading books, taking courses, or watching tutorials won’t by themselves turn you into a developer — writing code will. Think of coding like an artist learning to draw: you only get better by putting pencil to paper and sketching, sketching, sketching.
- Spend most of your time coding. Instead of passively consuming content, build small apps and features — todo‑lists, simple games, weather widgets.
- Embrace mistakes. Every bug or crash is a lesson. Debugging trains you in how Android really works.
- Iterate and refactor. Revisit old code to apply new patterns, clean it up, and make it more efficient or more idiomatic.
- Balance theory with hands‑on. Knowing design patterns, architecture flavors (MVVM, Clean Architecture) and Kotlin features is important — but those concepts only solidify once you apply them in real code.
- Build end‑to‑end. Even a minimal app teaches you the full flow — UI, business logic, data storage, networking, and deployment.
By making coding the centerpiece of your learning journey, you’ll accelerate your skills, build confidence, and be ready to tackle complex Android challenges.
Leverage Grok, ChatGPT, Gemini (etc.) not for blind copy‑paste, but as a tool to deepen your understanding and speed up your learning.
- Build a foundation first. Complete a free beginner course (e.g., Google’s “Android Basics with Compose”) and implement a few small pet projects on your own before turning to AI.
- Ask “why,” not just “how.” When AI proposes code, question it: “Why use this pattern?” “What alternatives exist?” “How would a senior developer approach this?”
- Request mini‑examples. Have AI show you a standalone snippet (e.g., a simple to‑do list or UI fragment) so you grasp core ideas outside your main project.
- Don’t copy blindly. If something is unclear, drill down with follow‑ups: “Why is this CoroutineScope used?” “What happens if I replace the ViewModel with a plain class?”
- Refactor and reinforce. Rewrite AI‑generated code by hand, check against official Google docs, and adapt it—this cements your knowledge and keeps you aligned with best practices.
Instead of cramming for hours at a time, dedicate a fixed slot every day—30 to 60 minutes—to coding.
- Build lasting habits. Daily practice creates neural pathways that help you internalize syntax and workflows much more effectively than occasional marathon sessions.
- Improve retention. Short, focused sessions reinforce what you’ve learned and reduce the forgetting curve, so concepts stick longer.
- Prevent burnout. Regular, manageable study blocks keep you energized and motivated, whereas long, infrequent sprints can lead to fatigue and frustration.
- Track steady progress. Seeing small wins each day—fixing a bug, writing a function, mastering a UI component—builds confidence and momentum faster than sporadic deep dives.
- Adapt and iterate. Frequent touchpoints let you quickly identify gaps in knowledge and adjust your learning plan, ensuring continuous improvement.
Don’t wait until you’re job‑hunting to figure out what employers want—start by browsing positions now to guide your learning path.
- Scan major job boards. Regularly check sites like LinkedIn, Indeed, Glassdoor, and company career pages for “Android Developer” roles.
- Note recurring requirements. Pay attention to keywords that pop up across listings—e.g., Kotlin, Jetpack Compose, REST APIs, MVVM, dependency injection.
- Prioritize your learning. If you see “Coroutines,” “Hilt,” and “Unit Testing” mentioned in most ads, make those part of your study plan before less‑common tools.
- Shape your portfolio. Build demo projects that showcase these in‑demand skills—employers will recognize exactly what they’re looking for.
- Stay ahead of trends. Revisit listings every few months to spot new frameworks or methodologies (e.g., Compose Multiplatform, Jetpack DataStore) so your skill set remains current.
Although everyday Android development relies on UI frameworks and architecture, many entry‑level roles—and especially FAANG interviews—still include DS&A questions.
- Know when it matters. DS&A challenges are more common for junior candidates and at FAANG‑level companies.
- Focus on key topics. Practice arrays, linked lists, hash maps, trees and basic dynamic programming.
- Use coding platforms. Solve problems on LeetCode, HackerRank or CodeSignal to build speed and confidence.
- Practice regularly. A few problems per week keeps your skills sharp without derailing your app‑building progress.
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Calculator
What you’ll learn:- Building a simple UI (buttons, TextViews/Compose Text)
- State management for input and result
- Implementing basic arithmetic logic (add, subtract, multiply, divide)
- Handling edge cases (division by zero, multiple operations)
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Tic‑Tac‑Toe
What you’ll learn:- Grid layouts with ConstraintLayout or Compose LazyVerticalGrid
- Game state management and turn logic
- Detecting win/draw conditions
- Resetting and persisting game state across rotations or process death
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To‑Do List App
What you’ll learn:- Building dynamic lists with RecyclerView or Compose LazyColumn
- Local data persistence using Room (entities, DAOs, database)
- CRUD operations (create, read, update, delete tasks)
- Form validation and user input handling
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Recipes App
What you’ll learn:- Loading JSON data from assets or a remote endpoint
- Displaying a list of items with images and descriptions
- Implementing search and filter functionality
- Navigation between list and detail screens (Jetpack Navigation)
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Weather App
What you’ll learn:- Consuming a REST API with Retrofit + OkHttp
- JSON parsing with Moshi or Gson
- Displaying current conditions and a multi‑day forecast
- Handling network errors, loading states, and caching responses
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Chat Application (Firebase)
What you’ll learn:- User authentication (Firebase Auth: email/password, Google Sign‑In)
- Real‑time messaging with Firestore or Realtime Database
- Uploading and displaying images or attachments
- Push notifications via Firebase Cloud Messaging
- Presence management (online/offline status)
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Media Player
What you’ll learn:- Playing audio/video with ExoPlayer
- Background playback and MediaSession integration
- Custom notification controls for playback
- Downloading and caching media files
- Handling audio focus and different screen sizes/orientations
Choose the project that matches your current skill level and gradually step up. Each app will teach you core Android concepts and give you confidence for real‑world development!
- Discord – Join the Android Developers community
- Reddit r/androiddev – Discussions, Q&A, and news
- Kotlin Discussions – Official Kotlin forum for questions, announcements, and community support
- Stack Overflow – Ask questions and find answers on Kotlin and Android development
- Kotlin Community Hub – Links to Kotlin events, user groups, forums, and contribution opportunities
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Figma Crash Course Playlist — a comprehensive series of video tutorials on Figma covering design fundamentals, prototyping, and UI best practices. While some video are lengthy (up to 10 hours), they provide in-depth training for mastering UI/UX concepts.
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Coursera: UX Design by Google — a specialized UX design certification program from Google covering user experience principles, research methods, wireframing, prototyping, and user testing. Ideal for developers looking to improve their app design skills.
- android/compose-samples — official sample projects from the Android team demonstrating best practices with Jetpack Compose. Great for learning Compose by exploring real, well-structured codebases.
- SmartToolFactory/Jetpack-Compose-Tutorials — a large collection of practical Jetpack Compose examples, components, animations, and layouts. Very useful for learning by doing.
- vinaygaba/Learn-Jetpack-Compose-By-Example — a hands-on guide with dozens of Jetpack Compose examples, covering layouts, animations, state, and more. Perfect for exploring Compose piece by piece.
- Foso/Jetpack‑Compose‑Playground — a playground — full of small reusable Composables, layout patterns, and UI experiments—great for quickly testing and learning UI building blocks.
- jetpack-compose/jetpack-compose-awesome — an extensive, community-curated list of Jetpack Compose libraries, tools, articles, sample projects, and learning resources. A great starting point to discover what's possible with Compose.
- Gurupreet/ComposeCookBook — a comprehensive collection of Jetpack Compose UI components, animations, layouts, and full app examples. Great for understanding how to build beautiful and functional UIs with Compose.
- DoggyDoggyDoggy/Android-Interview-Questions — a structured and categorized list of Android interview questions covering Kotlin, architecture, coroutines, testing, and more. Great for preparing for technical interviews.
Explore complete open-source Android apps built with Jetpack Compose, Kotlin Multiplatform, and modern architecture patterns:
- shinhyo/Compose-BreakingBad — Breaking Bad-themed app demonstrating MVVM, Clean Architecture, Jetpack Compose, Retrofit, and more.
- PatilShreyas/NotyKT — a full-featured note-taking app using Kotlin Multiplatform Mobile (KMM), Jetpack Compose, Room, Ktor, and Clean Architecture.
- michaldrabik/showly — an open-source TV show tracking app with modern Android development stack, beautiful UI, and Trakt.tv integration.
- Hamza417/Inure — a powerful Android app manager with in-depth analysis features, built using Jetpack Compose and Material 3.
- willowtreeapps/vocable-android — a voice communication app designed for accessibility, allowing users with speech difficulties to communicate using customizable phrases.
- igorescodro/alkaa — a simple and elegant habit tracker app using Jetpack Compose, Clean Architecture, Hilt, and Room.
- phicdy/MyCuration — an RSS reader app built with Jetpack Compose and Jetpack libraries, focusing on performance and offline reading.
- louis-fri/SoMovie — a movie app using TMDb API, implementing modern practices like Compose, Hilt, and modular Clean Architecture.
- Chesire/Nekome — a MyAnimeList client built with Jetpack Compose and showcasing advanced architecture, coroutines, and API integration.
- skydoves/Pokedex — a modern Pokedex app demonstrating Jetpack Compose, Hilt, Flow, and MVVM with impressive animations and UI design.
- HabitRPG/habitica-android — the official Android app for Habitica, a gamified task manager combining productivity and RPG elements.
- muzei/muzei — a live wallpaper app that gently refreshes your home screen each day with famous works of art.
- ferPrieto/SpaceX-prepare-for-Clean-Architecture-liftoff — a sample SpaceX app demonstrating Clean Architecture, Kotlin, and modern Android development practices.
- VladimirWrites/BLTaxi — a simple ride-sharing app built with Kotlin and Jetpack Compose.
- shadowsocks/shadowsocks-android — the Android client for Shadowsocks, a secure socks5 proxy, widely used for privacy and censorship circumvention.
Contributions welcome! If you know of additional high-quality resources (with links), feel free to open a Pull Request. 😊