Affiliate program is the easiest way to earn money online. Here you do not need a big setup to establish your business; you need not to keep information about your customers, their credit card information etc. The only thing you need to start your business is a website.
There are lots of websites selling their products like music, video, weight loss products, etc. on the internet. The basic idea of affiliate programming is that you send customers to their sites and when a purchase is made, the affiliate i.e. you earns a commission for it. Some websites offer commission as high as 75% to their affiliates.
To start your carrier as an affiliate first you have to select the type of products you can promote. It depends mainly upon the category of your website. To join in affiliate program as an affiliate you have to signup with the websites which offering affiliate program to sell their products. In most of the cases it is free to join. After joining they will give you a unique link to send customers to their sites. Actually this link is the identification of the referrer. You put those links on your website with some promotional text to attract your visitors. Some websites even offer good promotional tools like, promotional text, banners, articles etc to their affiliates.
If you are new in this field then you have to be careful in selection of affiliate program. In my opinion ClickBank is the best place where you can start safely. ClickBank is an affiliate network. An affiliate network is a place where people come to buy, sell or to promote products. In ClickBank affiliate network there are several thousands of venders (those who are selling products) offering affiliate program to you. As an affiliate you can promote as many products as you like. Considering commission per sell, earn per sell, product popularity you have to select among them.