- Get Yourself Pre-Processing in a Few Minutes
- Using the LESS CSS Preprocessor for Smarter Style Sheets
- An Introduction to LESS and Comparison to Sass
- Sass vs. LESS
- Working with CSS Preprocessors — Google Developers Guide on using Chrome DevTools
- Sass Style Guide
- Great suggestions on best practices for Sass syntax and organization.
- http://css-tricks.com/sass-style-guide/
- Assembling Sass
- http://www.codeschool.com/courses/assembling-sass
- Great introductory course from Code School.
- Useful CSS3 LESS Mixins
- When to use Sass mixins, extends and variables
- LESS2CSS — http://less2css.org
- LESSTESTER — http://lesstester.com
- CSS Compiler — http://www.csscompiler.com
- Mixture — http://mixture.io
- Sassmeister — http://sassmeister.com