If you have a website which drives a consistent amount of traffic, either organic or paid and if you are monetizing this traffic with only one way, you should definitely try some other means of monetization. For example, let’s say your website is based on a niche and you serve adsense ads on your website. [...]

So, you found a website related to your niche, which offers some great products targeting your niche and you want to see if they have an affiliate program.
The first thing to do is to skim the homepage to see if there is a page related to an affiliate program. What you will be looking for [...]