Affiliate marketing can be broken down into different levels of involvement: unattached, related and involved. Unattached affiliate marketing is a basic pay-per-click affiliate marketing campaign that requires little to no involvement with the product you are promoting. Related affiliate marketing requires you to have some authority and content on the product you are marketing, but you don't personally use the product. Involved affiliate marketing is perhaps the most effective, as you'll be marketing an affiliate product that you actually use and enjoy.
The internet changes so fast that one year online equals about five years in the real world. But the principles of how to start and grow a successful online business haven't changed at all. If you're just starting a small business online, stick to this sequence. If you've been online awhile, do a quick review and see if there's a step you're neglecting, or never got around to doing in the first place. You can't go wrong with the basics.