Know when to wait. Some affiliate programs require a certain level of traffic, subscribers, etc. If that’s the case, I say it’s better to wait to apply for that program instead of applying and hoping for the best. You risk being labelled the person who can’t follow guidelines and you might also risk not be allowed into the program when you do meet the qualifications.
Know what sets each program apart. Affiliate programs are everywhere online, and it can be hard to tell them apart. Each program distinguishes itself by the products it sells. Some affiliate programs only require you to post links; others will ask you to pay money to learn about how to sell the product you are selling. As the latter type of affiliate, you can make commissions by getting others to pay—by bringing other marketers into the fold. Be wary, however, of any program that asks you to pay.
The problem with affiliate marketing, like many other home business options, are the so-called gurus and get-rich-quick programs that suggest affiliate marketing can be done fast and with little effort. Odds are you've read claims of affiliate marketing programs that say you can make hundreds of thousands of dollars a month doing almost nothing ("Three clicks to rich!"). Or, they suggest you can set up your affiliate site, and then forget it, except to check your bank deposits.