Week 1: CSS
Other resources:
- Solved by Flexbox not rea
Week 2: Testing
Week 3: DOM manipulation + APIs
Week 4: Node.js
Other Hackathon Starter
Other libraries: routers, cookies, other parts of the express/node stack; jquery-like libraries, simple isomorphic libraries...
Possibly some of https://github.com/pillarjs
And anything written by substack.