I just finished putting in a M500 240GB Solid State Drive into my macbook because It wasn’t able to edit videos that well. It was actually quite easy! These are the directions I followed.
http://www.tuaw.com/2013/05/14/mac-101-upgrade-to-ssd/
Now I’ll be able to edit the videos that I’ve taken this past summer and the ones I am taking now, so stay tuned!