All great advice here. I would toss in that you should make sure that your topic is fun, and interests you. (There's plenty of time for boring work later in l

All great advice here. I would toss in that you should make sure that your topic is fun, and interests you. (There's plenty of time for boring work later in life!) If you like games, create a game. If you like Math, visit projecteuler.net. If you are interested in potentially majoring in Computer Science in college, take Udacity, or look up Harvard's CS50 for an idea of what you'll be getting yourself into. It's tough to major in CS without having some comfort with programming and (more important!) patience with debugging when you arrive on campus.