Sublime text 2 is one of the most popular editor , and simply fast and have lots of features.
It can be downloaded evaluation from official site and if you like it you can buy licence. I am using ST2 from past coupls of months and its really fast other advantages are package control, syntax highlighting for any available file type like SCSS , HAML, coffee-script.
Below are the list of tutorials for sublime text 2. My favoriout tutorials are Project Management, Package Control, Using Multi Select and Linting your code.