There are many different sites that you can use to find affiliate marketing offers. Clickbank is one of the most well-known and also very popular and it focus on digital informational products. Clickbank is a great place to start if you are new to affiliate marketing because it has a wide variety to choose from and it's very easy to get started. Clickbank lets you, as an affiliate, sell electronic products even if you do not have a merchant account and the commissions generally range from 50% to 75% of the sale. Right now, Clickbank boasts over 100,000 affiliates that are selling over 10,000 products.
In order to choose the right products, most people look at the "Gravity" and popularity score which is assigned to each product. The easy definition of gravity is a measure of how much competition there is for the particular product - however, the actual measurement is derived by a more complicated formula. In general, you do want a comparatively high gravity when looking for a product to promote, but not so high that it is too hard for you to compete.
Commission Junction (CJ) is another popular site that has many affiliate marketing offers from which to choose. The merchants that put their products and services on Commission Junction tend to be bigger and more established companies who are experienced in product development, marketing, and promotion. CJ also offers many types of promotional links for its affiliates. So, you can promote the products and services that you choose with banners, text links, product links, and search boxes.