If the above locations do not yield information pertaining to affiliates, it may be the case that there exists a non-public affiliate program. Utilizing one of the common website correlation methods may provide clues about the affiliate network. The most definitive method for finding this information is to contact the website owner directly if a contact method can be located.
I'm just starting at Clickbank, so I'm a total newbie, but if I want to follow this strategy can I do it promoting just one product, for example, Category>Health & Fitness ---> X product. Then, should i start a blog or something like that where i can talk about things related to the product subject? if so, do i have to start making entries about this recurrently? or I can opt for just making an article with a free ebook in exchange to user's e-mails and follow the process?

Affiliate marketing is an ideal solution for those looking to gain control of their own income by focusing on performance-based revenue options. Working in tandem with a seller, a motivated affiliate marketer will be able to achieve a passive income from the comfort of their home without worrying about producing their own product or service. Although the success of the job does depend on the affiliate’s marketing skills, it can prove to be an effective way to meet your income goals as either a primary career or a profitable second job.
I’ve had a quick look at your site and the first thing I noticed is that it’s not sexy. Site design is so important. Anytime I come across an ugly website I hit the back button faster than you can say call-to-action. I also see that you only have two pages, there’s no identity or branding behind the site. You’ve also got a generic header logo that is usually applied by default when you install a theme. No custom logo’s or anything.
ClickBank is a privately held Internet retailer of both physical and digital products. ClickBank was founded in 1998.[1] The company has more than six-million clients worldwide[2] which secured it in becoming the 87th largest Internet retailer in North America.[3] ClickBank is a subsidiary of Keynetics Inc., one of Idaho's largest privately held technology companies.[4] The company has headquarters in Boise, Idaho, and offices in Broomfield, Colorado.
For those who want to figure out how to sell Amazon products and make money off it, this course on 2017 Affiliate Marketing + SEO Strategy could be ideal for you. It’s a quick course that teaches how to build an amazon affiliate website, brushes you on the latest SEO techniques but may not be enough if you are looking at an advanced curriculum. The trainer Isli Hoxha, Website Developer & Growth Hacker will teach you marketing in depth.
When promoting affiliate offers, just make sure you are fully aware of all the terms and conditions attached to your affiliate program. Some programs can be strict about how they allow you to promote their products. For example, some may limit you to banner ads and links only, while others will allow you to use paid advertising, but won't allow email marketing. 
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