With Affiliate marketing, you get paid a certain percentage when you promote products owned by someone else and the person makes sales through you. You’re going to find countless products to promote in every niche you can imagine. Only promote those products you believe in. If you can’t physically test the products yourself, do some research to find out what other reviewers are saying.
The truth is, there are so many products to promote. You’ll be tempted to send out your diverse affiliate links to your email list and subscribers every day of the week. Don’t! You’ll only irritate your subscribers, especially if you’re promoting poor-quality products just so you can get a sale. Only promote products you believe in and the ones you have used yourself.