Decided to make this thread a sticky again as we have so many n00bs asking for the best ways to get started and how to pick a niche.
PLUS I just blogged about this to add to your niche finding arsenal:
Affiliate Classroom Magazine
Want to know everything you need to about Niche Marketing? Ok, maybe you can’t learn everything in one magazine issue. But what you will find in this issue of the
Affiliate Classroom Magazine is primo!
Want to get advice on how to pick a niche? Evelyn Grazini gives you tons of tips. Want to find out how to leverage CPA (Cost Per Action) campaigns for niche websites? Mark Thompson tells you all about it. Want to find out how the latest Web 2.0 and Social Networking gizmos can help you do niche market research? Kati Torok will gear you up.
Hope this helps and best of luck! Enjoy!