My best advice to you is to promptly unsubscribe from the tremendous amount of promotional e-mails that you get every day. Don't make the mistake of getting out your credit card every time something new crosses your desk. Before you know it, you'll be buried in credit card debt and will not have made a single dime online.
One of the best ways to learn about Internet marketing and specifically affiliate marketing is to go to the forums and see what other people are saying. You will find that there are many free resources to use, there is a lot of help available, and you can learn the simple process of affiliate marketing very quickly.