(App For OSX) SelfControl lets you block access to distracting websites during exam crunch or anytime you need a little more self control. Until the timer expires you will be unable to access those sites.
Study Blue Online Flashcards - an effective way to memorize information. Use text, pictures and audio to create the perfect stack of (digital) flashcards; or, search the massive database to borrow someone else's.
Topical videos covering suggestions for Weekly Routines, keys to a Good Semester, Tests, Problem Solvling,and taking Good Study Notes http://lsc.cornell.edu/Sidebars/Study_Skills_Resources/SKResources.html