Access to a computer, spreadsheet software (Excel or Google Spreadsheets), an email account, and an eager and open mind! Additionally, I ask that you have at least some online following already. It can be a small one, but you shouldn't be starting from scratch when getting access to this course. If you're not sure what your business is about yet, that's the most important thing to figure out first!
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.