Please ensure your contribution adheres to the following guidelines:
- Suggestions should be awesome! Only add resources that you can personally recommend.
- Make an individual pull request for each suggestion.
- Link additions should be added to the bottom of the relevant category.
- Use title-casing (AP style).
- New categories or improvements to the existing categorization are welcome.
- Check your spelling and grammar.
- Make sure your text editor is set to remove trailing whitespace.
Thanks for your suggestions!