Get your own turnkey website, a quick primer
Affiliate websites can be built with the help of free software that you can find online. People who have affiliate websites can not just sit back and do nothing once they have their site built. Your real work is in advertising these websites. I have been speaking about affiliate websites in the plural because a lot of people operate more than one if they are really successful at it. Even though building affiliate websites is easy, promoting them is really hard to do.