Welcome to CD! There are many tutorials to look at to help you customize your psp. Homebrew is a term frequently applied to video games produced by consumers to target proprietary hardware platforms not typically user-programmable or that use proprietary storage methods.(Yay wikipedia lol). You have to have CFW (Custom Firmware) in order to put certain things on your psp. All you have to do is look through the tutorials and ask around to find out exactly how to do it (unless someone wants to post a full tutorial).