You can earn a 5%
commission by selling Graded Go Problems for Beginners, Volume One: Introductory Problems, 30-Kyu to 25-Kyu (Beginner and Elementary Go Books)
on your website. It's easy to get started - we will give you example code.
After you're set-up, your website can earn you money while you work, play or even sleep!
You should start right now!