What is the best affiliate program?

Clickbank is also good, you can try clickbank also...

Depends what niche you're in. Amazon has worked very well for me. Also I've earnt quite a bit from iTunes on Tradedoubler.

Yes, it is obviously good. In this period of economic downfall starting your own work from home affiliate program is the best way to earn money. You are just pre-selling the client's products. Pre-selling is giving facts and information to whoever might be interested in that particular product or service and informing them of where to go to get what they are looking for. There are many different ways to go about doing this. One common way is to place small ads in free ad directories or bulletin boards. One very popular way is small ads placed on Google, Yahoo, the list goes on. Then you have article directories, where you can submit articles that you have written. Moreover, at most directories it is free to submit articles. Other ways are with Twitter, Facebook, forums, email. The list is just endless.