Google AdSense I used to use ValueClick banner advertising and the results were about only half as good.
If you are a website owner = The best PPC is the one that pays you more at the end of every month. If you are a business owner = The best PPC is the one that gets you more clients from the least amount of money. That's what my PPC Network is all about. If you want to know more, let me know or drop me a PM
You can use ppc (adsenes, bidvertiser, clicksor..) on your site with traffic. PPC pay per click when somebody click on your ads then you will be get paid.
You can study basic PPC on Google Adwords Learning Center, which I did before I set up TonerBoss Company Google Adwords account. Hope it helps.
Pay Per Click is an online advertising payment model in which payment is based solely on qualifying click-throughs. You click, and refer then your money increases. Try Neobux and Wordlinx, if you register in more PTC sites, you'll earn more money. You just need to be patient and hard-working. Good luck!