4 Steps to help you choose the right niche
1. Make a list of products you own or at least, use
I can almost see that you wonder what this is. Let's see. Open your browser, Google for "affiliate programs". See what I mean? You can't really decide what product to promote and sell. Now, if you have the "own/used" list, you can at least have an idea about some products you could talk from real experience.
And that's far better than just randomly browsing and choosing a product you've never heard about. You can go ahead and make some products categories. I'm sure I don't have to talk about product quality (you only buy best quality, or at least best value for the money, right?).
2. Choose your "Expert category"
From the "own/used" list, what products do you really love? Or which you master the best? What makes you an expert? I bet that you have some excellent products which you use every day or purchased and used with enjoyment. Not many, only a few. This will shrink your list a little, so don't cut everything else, just make an "Expert category"
3. Look for the affiliate programs for the products in your list
Now that you have the own/used list of products and the "Expert category", you can start finding out if they are sold through Affiliates. Chances are that many of the products will make it, while the others should go to the recycle bin for later.
Once you find affiliate programs for the products, look for the conditions they offer: commissions, payment date, conditions to join and problems. Take out the products in "nasty programs", you now have the own/used/not nasty products and the Expert/not nasty categories.
4. Affiliate competition, demand and conversion rate
We have several filters that we can further apply:
• affiliate competition (just Google to see how many other affiliates are promoting the selected products, and how good they are)
• demand (searches made, general interest in them)
• conversion rate (that would be based on some assumptions regarding how many of the visitors will actually buy something)