How to find best-selling products form best affiliate networks?

I am looking to start my own website so I can promote best affiliate networks on my website. I am willing to know how to find their best selling products on internet. Please help me finding.

According to me, start with a product which is sold moderately because you will get exposure in the field and you can plan for future. How this best affiliate networks are running and what kind of products are been sold regularly. According to me diet pills or electronic gadgets are been sold a lot on this networks.

Source(s):

bestaffiliateprograms.futtoo.com