- Intermediate Python Intermediate python book by Muhammad Khalid.
- Rest API Development A course in Python.
- Automate the Boring Stuff (with Python). A book.
- Learn Python the Hard Way a book and course for new programmers by Zed Shaw.
- ruby tapas short ruby screen cast lessons
- RSpec Smells and Where to Find Them An in progress book by @samphippen on rspec unit testing
- Learn EmberJS
- Angular 2 Fundamentals Lesson teaches by building Google Keep in Angular.
- Make Money Outside the Mac App Store A walkthrough on selling a mac app on FastSpring by christian tietze
- Elements of User Onboarding
- The Single Founder Handbook
- Advanced Algorithmic Trading machine learning applied to finance
- Youtube video series Learn to Ski
- Practical Typography an online ebook
- A Sketch Master Class by Jean-Marc Denis, currently on hiatus. Discussed here
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