# Contribution Guidelines

Please ensure your pull request adheres to the following guidelines:

- Search previous suggestions before making a new one, as yours may be a duplicate.
- Make sure your list is useful before submitting. That implies it having enough content and every item a good succinct description.
- A link back to this list from yours, so users can discover more lists, would be appreciated.
- Make an individual pull request for each suggestion.
- Titles should be [capitalized](http://grammar.yourdictionary.com/capitalization/rules-for-capitalization-in-titles.html).
- Use the following format: `[List Name](link)`
- 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.
- The pull request and commit should have a useful title.
- Within each category, all links must be ordered alphabetically.

Thank you for your suggestions!