Once your hosting is set up, you need to install a content management system (CMS) for your site. We recommend WordPress because it is easy to use and a beginner (like you!) can quite quickly figure out how it works. Most good hosting providers will have a one-click install option for WordPress, which means it will only take you a couple of minutes and you will have WordPress installed on your site.
Affiliate marketing is also called "performance marketing", in reference to how sales employees are typically being compensated. Such employees are typically paid a commission for each sale they close, and sometimes are paid performance incentives for exceeding objectives. Affiliates are not employed by the advertiser whose products or services they promote, but the compensation models applied to affiliate marketing are very similar to the ones used for people in the advertisers' internal sales department.