You can earn a 5%
commission by selling Flying Machines: Construction and Operation; A Practical Book Which Shows, in Illustrations, Working Plans and Text, How to Build and Navigate the Modern Airship (Classic Reprint)
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!