Pay Per Click (also referred to as PPC) is a method of generating web traffic that involves paying for each of your visitors. Usually you pay anywhere from 10 cents to several dollars for a web visitor.
Like all traffic methods, this can be a very effective method of generating traffic or it could really tank. There are a plethora of books written on this topic and audios everywhere to teach you more. We can’t get into everything, but we can give you an idea of how to start.