Here's my 2 cents on Affiliate marketing: sign up for an Amazon Affiliate account now. Start practicing your sales pitch for links in the description.
If you do not garner 3 sales in something like 90 days your account gets automatically cancelled but you can immediately sign up for another account. When you do so you will need to go back and change your affiliate links on all your previous videos as your prior link will no longer be valid.
This process sucks, and hopefully you dont have to redo the account. But it is the quickest and easiest way to get your foot in the affiliate door.
FYI: Amazon knows when you order from your own links, you don't get credit for it. Somehow they've been able to identify my wife as well, we dont get credit for her purchases but myself and several friends all make sure to do all of our purchases on Amazon through each others links and that helps.
Good luck!