A while back I posted a tutorial on how to style Twitter Bootstrap and specifically build out new Mezzanine themes using the bootstrap framework. Bootstrap uses Less files which are compiled to css files. In the video I show you how I set it up so that I can easily style a new site using bootstrap without modifying the bootstrap files directly. That makes it easy to update bootstrap later without having to merge your changes back in.
I also show how I set it up to compile the changes automatically on every save using the excellent Less app for Mac.
Its sort of long and it was done in a single take on my lunch break so if it sucks, that would be why.