get a computer

My computer have been broken for two years. I didn’t want to have a new one at that period because I must study harder to get good grade and get to the university I want and the computer will make me distract. But now, the exam was over. I want to get a good-functional computer and learn many program, like 3D MAX, JAVA and so forth. But first I want to build a computer by myself. So I need to broaden my computer knowledge now.