The document provides guidance on selecting an affiliate program to join. It discusses several important factors to consider, such as whether there is a cost to join, how commissions are paid, how clicks and sales are tracked, what affiliate statistics are available, whether impressions and clicks are paid in addition to sales commissions, details about the retailer offering the program, whether it is a one-tier or two-tier program structure, and the amounts paid for commissions and clicks/impressions. Doing research on these types of factors is advised before choosing a program to ensure it is a good fit.