if you have an iphone I recommend the rohen flashcards on it. They were an expensive app, but they gave me something to do when I would zone out/falling asleep in a lecture. They have quizzes you can do on them which I used more than anything else. I also did the quizzes while waiting for people, in line, or waiting for clinical medicine things to start. I like the phone version since i could do them without holding a bunch of things in my hands. I also had the netters flash cards and would use them to flip through structures we were studying in class while on the shuttle, etc. I think the Rohen was more useful for showing what it really looks like though.