How to troubleshoot / debug your work using DevTools. Aimed at beginners and focuses on HTML and CSS.
http://cssspecificity.com
DevTools Tutorial: http://discover-devtools.codeschool.com/
DevTools Documentation: https://developers.google.com/chrome-developer-tools/
Sublime Text 2 Tutorial: http://code.tutsplus.com/articles/perfect-workflow-in-sublime-text-free-course--net-27293