When testing an affiliate offer, I think it is important not to change everything at once. A simple approach is to set a budget, define a testing period, formulate a few hypotheses and decide beforehand when to stop. I recently came across HuntMe while reading about affiliate marketing in the adult vertical, and their materials touch on traffic and offer testing from a practical perspective. The idea of an Adult Offer Testing System: Budget, Timelines, Hypotheses, and Stop Criteria is especially useful for beginners who tend to keep spending money on a campaign without clear criteria for evaluation. Having predefined conditions makes it much easier to understand whether a test is actually worth continuing.
