It's nice to hear from you!
Yes, affiliate programs are legal and legit. Although not a main concentration of our business, we do offer products we believe in on an affiliate basis. And yes, you can make money with them!
Here are my suggestions:
Choose something that you can really get behind yourself. I think some of the greatest options, affiliate programs/products that can help people, can be found here:
Knowing you, you might also enjoy working with a new product, called Jesus: The Man and His Work. It is also by Wattles, of Science of Getting Rich. It is an unorthodox but empowering interpretation of who Jesus was and what His message was supposed to be. You can find more about it here:
Jesus: The Man and His Work
Advertise with your own website, or in others' newsletters. Most of the affiliate programs will explain to you how to do all of these things.
There are also many other types of affiliate products, so search around and see what is out there. Many products offered online offer affiliate programs.
Find something you like, and run with it! Often there is little to no financial investment required for yourself.
Let us know how it goes!