Let’s start by looking at the competition. Where are their gaps? If you can beat it, this is a good place to start. By now you should have an understanding of your target audience. This is the time to think about what makes them tick. Use anything you have to build a picture. Look into keywords and search queries to see what people are looking for, and any existing analytics you have. If you’ve written a well performing blog article, is there room to expand on that topic?
Of course you want affiliates with high commissions, but they should also have a solid reputation with high conversions and low reversal rates (you get $0 if people cancel after signing up). If they’re part of an affiliate marketplace like ShareASale or ClickBank you can see some numbers there. Companies likes Amazon/SiteGround are safe bets, otherwise do your research (or track your affiliate links so you can monitor their performance). Avoid affiliates offering huge commissions since this probably means they’re struggling to acquire/retain customers naturally. This will hurt your numbers (specifically your conversions/reversal rates).
Let no one tell you that email marketing is dead. An email list is crucial for every affiliate marketer. You can start building up your email list with a lead magnet (like the information products mentioned previously) or even just by encouraging your audience to sign up for your updates. You can then push your content to this audience via email and also direct them to your affiliate offers. Don't be sleazy about the sales, but if you build up enough trust with your email audience; when the time comes, they will not mind purchasing a product from you. 
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.

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.
Browsing between products, you’ll notice a steep difference in the amount of commission offered from one to the next. Often, you’ll find there is a trade-off between the quality of a product and the commission paid. Naturally, it’s tempting to gravitate toward the products that pay the most per sales (conversion). But, realistically, if those products are unlikely to convert, they might not be the best fit.
Pay-per-click – Another effective way of attracting customers to your affiliate site is to advertise or pay for PPC. You don’t have to go far to look for this one, since Google’s own paid advertising can already do wonders on its own. Fees are only in cents per-click, but this adds up pretty quickly, so expect to shell out $50 or more for a low-budget campaign.
Now most affiliate programs have strict terms and conditions on how the lead is to be generated. There are also certain methods that are outright banned, such as installing adware or spyware that redirect all search queries for a product to an affiliate's page. Some affiliate marketing programs go as far as to lay out how a product or service is to be discussed in the content before an affiliate link can be validated.
In short, you must create excellent content, which will drive high quality traffic to your site from free search engines, at which point you can “pre-sell” those visitors by giving them so much awesome information that when you make a product or service recommendation, they are happy to buy. THAT is when you can monetize. I highly recommend you read this full article on the CTPM process as I use this process for ALL of my affiliate marketing websites.
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