One thing I like about affiliate marketing is the amount of help available online from the affiliate merchant. There are also many good affiliate marketing resources you can use to help yourself build your business.
None of these take a college degree to operate. However, you do need to become educated on doing affiliate marketing the right way.
You can access articles in article directories on the topic of affiliate marketing. Ezine Articles and Idea Marketers are two excellent article directories that have plenty of articles you can read.
You might want to look into joining an affiliate marketing membership site for personal training. I like the Affiliate Power Group.
Here you will get professional mentoring from full-time Internet marketers who run their membership site with a very hands on attitude.
Associate Programs is a great affiliate marketing site run by Allan Gardine. Their website and forum has been helping people with affiliate marketing for over 10 years now.