Expand syllabus

[frederickobrien]

There is a lot of room for improvement in the /learn section. New lessons could (and really should) include...

• History (Add 'History' section to syllabus #369)
• Punctuation (Punctuation outlines, logic, and learn section #370)
• Numbers (Add numbers #377)
• Individual letter breakdowns
  • The R principle
  • Ss
• Currencies
• Measurements (Learn sections: 'Measurements' and 'Further resources' #383)
• Abbreviations
• Further learning and resources (Learn sections: 'Measurements' and 'Further resources' #383)