This book doesn't lead you by the hand and tell you how to do every last thing. It can't and Greene didn't attempt to do that. You have to do the work yourself to reap the rewards. Greene simply points out that Clickbank isn't the get rich quick scheme everyone seems to be looking for and then he tells you how you can actually work to turn it into a great passive income source.
We’ll go into more details regarding each step but let me give you a quick overview of each. The product/offer is the ClickBank product you’ll be promoting. This might seem like it’s simple enough but screwing up this step could potentially hinder you from earning a single cent because the other steps are built on top of it. Product research has its own separate section below.
3. You may use the Amazon Marks solely for the purpose specifically authorized under the Program Documents. You may not use or display the Marks (i) in any manner that implies sponsorship or endorsement by us; (ii) to disparage us, our products or services; (iii) in a way that may, at our discretion, diminish or otherwise damage our goodwill in the Amazon Marks; or (iv) in offline material or email (e.g., in any printed material, mailing, SMS, MMS, attachment to email, or other document, or any oral solicitation).
Is there a product or service that you are particularly enthusiastic about? If you are, you may be able to develop a website that is built around selling it. You don’t have to be the actual provider of the product or service either. There are many businesses that offer these products and will allow you to sell them on an affiliate basis. For example, you may be able to sell a product on your website for a commission of 20% or 30% of the sale price.

Personally, I don't (and wouldn't) promote anything in any IM or MMO niches at all. I'm not, of course, saying that nobody else should. Clearly, however, there's little sense in promoting as an affiliate at ClickBank any products for which any significant proportion of the potential customers might themselves already be ClickBank affiliates, is there? They're hardly going to buy through a referring affiliate's hoplink when ClickBank allows them to buy through their own?
Robo-advisors are diversified investment accounts that are automatically managed by a computer algorithm (as opposed to a human money manager). If you want to invest, but don’t have the money, or don’t want to invest with a money manager, robo-advisors are for you! Robo-advisors make investing easier—and cheaper—so they’re perfect for new investors.