Now, after you have your site set up, you need to a way to receive payments.
There are a million and one ways to do it. You can go through Clickbank, JVZoo, WarriorPlus, Zaxaa, and more.
However, there are other, second tier companies, that I believe are even better for selling sub-niche products.
My favorite of these is a company called Send Owl.
I've been using Send Owl now for a few years and I really like it. Plus they've recently upgraded their shopping cart so it looks great.