The topic you choose must have enough depth that you can create a lot of content for it. This is important for building an authoritative site, for search engine optimization, and most importantly, for the end user. If you don't have enough content about a topic, you're not going to be taken very seriously as an authority on the topic and it's unlikely you can convince someone to make a purchase from you. 
There is a YouTube channel called money guru(I think so or something related to that) they have started new tutorials about affiliate marketing listen to them and make points but do not depend and believe them completely. Try yourself what you just learn on a daily basis. By going through them helps you to understand the affiliate marketing from the basics because they have just started the tutorials.
You can also consider Private Labels Rights (PLR) products.  PLR products come with article(s) and a license that indicates what you are allowed or not allowed to do with the PLR product.  Most of them allow you to make changes to articles and use as your own.  This is a great resource for articles for your website.  I have used a few, but I generally re-write the article with my own writing style.
If you get THAT clear and believe in some product, go ahead. Your audience trusts your word. But most folks need to use or experience before they can get clear, because they have a fear: the fear of using trust. I am slowly losing that fear but still use what I promote, before I promote it. I also just sell my stuff mainly. Since I have quite a few products and eBooks and services to sell.
Don’t set a goal to write 3 blog posts a day… set a goal to write 1 blog post a week and make that post super helpful, long, and filled with information that is so valuable you will say “yeah, people will link to that.” 90% of my traffic/affiliate income comes from just 20 tutorials, many of which are 5+ years old. But I am constantly updating them to make the content better.
Well basically, you just sell somebody else’s product’s or service’s online and get commission from the sales. You promote a certain site or product and get paid for every referral you get. As long as you’re using various affiliate marketing tools and earning money for every sale, click, download, registration or any other action, you are doing affiliate marketing.

Same here, this post kind of fell from the sky at such a great time. Been building a great community of readers over the years but reached a point where I’m losing money maintaining the site and newsletter. As you said, the ads don’t bring much -ironically I use Adblocks too but affiliate marketing always seemed like a weird and opaque subject. I’ve read many of Chris Guillebeau’s books in the last few months (this is how I discovered your site actually!) and I didn’t realize he had affiliate links for instance. Your post opened up a new window of possibility for me. Still need to process everything and do the work behind but a big thank you to you Sean!
×