When purchasing a computer, you have to know exactly what it will be used for and who will be using it. If a computer is mostly going to be used for Internet browsing, checking email, or making documents, then there is no need to buy an overly expensive computer. Decide what you want your computer to be able to do and shop around. Also decide if you want a PC or a laptop. Make sure if you’re going for a laptop that it has great battery life and that can handle what you are planning to do with it.