One of the easiest ways to earn full-time income from home is through affiliate marketing. You are the one in control so you can make it as big or as small as you want with no boss telling you what to do. The possibilities are endless as far as the products and services you can choose to promote. Keep in mind, however, that when you first start, it is a good idea to choose topics that you have some interest in, especially if you will be writing content for your website.