Last night, while browsing lifehacker.com, I found a link to a great site, http://www.flashcardexchange.com/. They have virtual flash card decks for anything you could ever want from science, to high school subjects to music to computers. I checked out the cards tagged 'Microsoft' and found some great ones for Microsoft Certified Developer exams. There are many others, linux, cicso, jave, etc, but the MS ones seemed pretty good to me. They also allow you to create your own card decks, view existing ones online, and even print and download them! If you are trying to study for, or learn anything, check the site out!