Let’s assume you register yourself with an Affiliate Network and decide to promote a product which is, say, a Coffee Maker. You promote it with various means like creating websites, posts on your site, PPC advertising, banners and text ads on social networking sites. Now someone clicks on those affiliate links and buys one or more products. Then that will be called a sale through your affiliate link. Once done successfully you will get the commission as fixed by that merchant.
The amount you can make will vary wildly – it honestly falls somewhere between zero and millions.

Keyword research is a vital skill. The simplest way of describing it is that keywords are the words that people type into a search engine. And keyword research allows you to see data such as: How many times that keyword phrase is searched each month Similar keyword searches related to the keyword phrase How competitive that phrase is (i.e. how hard is it to get a blog post that targets that keyword phrase onto the first page of Google?) The SERP (search engine results page) list for each keyword phrase. This can be useful to analyze the competition your post would be up against. For example, by checking the word count for each of the top ten articles, you can get a good idea of how many words your article should be.
Most successful affiliate marketers make the majority of their affiliate sales from their email lists. Whether you know it or not, email gives you the highest ROI. A welcome email (where you can talk about who you are and what people can expect from you besides welcoming them) Several email newsletters (mostly informative emails around the products you want to promote) Intro product email (where you can introduce your target product) Offering a freebie (or a free resource around the product you’re going to promote) Few more emails (which are mostly informative) Sales emails (this is where you sell the product) 8.3 Get exclusive coupon deals