You can create a free account and get an overview of the dashboard and access some initial knowledge without any payment. However, live events, research features, and the level 2 - level 5 series of courses, walking you through the process of creating and growing a business within the niche that you want, are limited to premium members. Membership costs $19 a month, or is priced at an individual rate. But it’s absolutely worth it when you take it seriously and want to invest in yourself.
I, too, have always looked at ClickBank as a secondary and even tertiary monetization source. But it can be a great sources of revenue. I linked one of my articles to a related product on CB, and without really doing promotion or anything unusual, I get a few sales a week. Mind you, the keyword(s) for the post aren't that huge either. So, even though the traffic not huge on that post, it still manages to get some sales.
On the other hand, we have affiliates, who are looking for ways to monetize their online presence. Affiliates (also known as publishers) are often bloggers and influencers who enjoy online reputation and a considerable following. This enables them to affect buying decisions of their followers. When they recommend a product, they encourage their followers to buy the same products. This activity is known as a conversion, and it is what enables affiliates to earn from this kind of strategy.
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.