Need a visual way to brainstorm your ideas? Try bubbl.us, a simple yet useful mind mapping application. Great for all the young planners out there!
Very simple concept here: write thoughts in bubbles, connect to other bubbles, eventually creating as diagram(complex or simplistic as you want). It's a super simple way to quickly jot down and map your ideas(or you could write them on paper, but this is tree-friendlier)