If you love leaving customer reviews on sites like Amazon, it may be beneficial to look into affiliate marketing as a source of income. Word-of-mouth advertising is still a huge lead generator for many companies, and a lot of businesses are willing to share a portion of their profits with persuasive individuals who will promote their products to the public.
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.