To make money from affiliate marketing, you need to ascertain that the product has a high demand. No matter how much efforts you make, you might make little or no sales, it totally depends on the demand of the product. You need to know if it is what your audience really needs. If you manage to get a reasonable amount of traffic on your site, then you can run a small online survey to get input from visitors.
If you are writing online your posts should be brief, clear, checked for spelling and grammar and consistent. Your blog may not have broad appeal if it has limitations in these, so your EBooks and public posts can benefit from a professional proof-reader, or extra classes in English, whether it is your first language or not. Whether you write a blog, a book or anything else, your only tool to deliver your message is language, and you should gain all the skills you can with it. If you don’t have time for this, use the services of someone with the best language skills you can find.
The problem with affiliate marketing, like many other home business options, are the so-called gurus and get-rich-quick programs that suggest affiliate marketing can be done fast and with little effort. Odds are you've read claims of affiliate marketing programs that say you can make hundreds of thousands of dollars a month doing almost nothing ("Three clicks to rich!"). Or, they suggest you can set up your affiliate site, and then forget it, except to check your bank deposits.