How to start Affiliate Marketing-through affiliate networks

A quick detour is now in order, to discuss affiliate marketing. This is when you
pay another website for sales that result from their customer referrals.
Affiliate marketing is typically done through affiliate networks, such as the
Google Affiliate Network www.google.com/ads/affiliatenetwork and
Commission Junction www.cj.com). In addition, some online retailers, such
as Amazon.com affiliate-program.amazon.com, run their own affiliate
programs.
The way it works is simple. A website signs up for the program and then displays ads for participating merchants. When a customer clicks the ad and
then proceeds to purchase an item from the merchant, the host website
receives a commission—typically a percentage of the final sale. No fees are
paid for placement or for clicks; a purchase has to be made for the commission to be earned.