Fast growth usually ends badly for most businesses. Fast growth may not be manageable without the right people. Build for the future. Target small areas where you can avoid big encounters that are able to take you out of business in just a few minutes. Remember to research those ideas, make sure that the idea is feasible, and try to find a niche product with low competition and high demand, preferable something you are already familiar with. Then start implementing the idea by starting small and continue with slow and stable growth. Long term earnings are always greater than short term earnings.
Basically, you pick a profitable niche for your online business, and then you find an affiliate partner who has products available in that niche. Some of the most popular affiliate sites are Clickbank.com, Amazon.com, and CJ Affiliate by Conversant (formerly Commission Junction). Between them, they offer just about any digital information product (like ebooks, audio files, video files) or physical product you can think of. May big name companies and brands, like Wal-Mart, Home Depot, etc. run their affiliate programs through these third-party affiliate sites.
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.