When using Sublime Text 2 we tend to open the side bar to navigate thru files/folders in our projects. For that we can use the hotkey ctrl+k ctrl+b (i
Ctrl+p is also really useful for opening files without using the mouse.
If you open a folder in Sublime all the files in that folder (and files in contained folders) will show up in the search you get with Ctrl+p.
Just hit Ctrl+p and start typing parts of the filename and you'll get a list of matches.