Before tinkering with your lights, or any other electrical appliance for that matter, disconnect it from power. If you are a beginner, I suggest trying a basic one-way light switch at first. Typically, the source is a circuit breaker in the main electrical panel that has a rating large enough to handle the lights.
Sorry it is difficult to post question on fixya, or communicate with people answering free questions. If you want to control both the light and the fan using 3-ways, then just wire 2 sets of the 3-way circuits. This article will teach you how to install a one-way light switch in detail. If you have lights in a large room or long hallway that you want to control with more than one switch, you may want to have a three-way switch. Or perhaps a fancy ceiling light you want to show off in the living room?