1. These are definitely the 2 most common, but anywhere you can use an affiliate link, you can make money. I see a lot of people spamming Quora with affiliate links but wouldn’t advise it. People who will actually buy the product through your link are the ones you will educate on why they should buy it. You need your own platform somewhere and blogs/YouTube and usually best.
Once you have the affiliate links you need, it is time to present them to your audience. As you start using affiliate marketing to talk about products, you need to be aware of how your audience perceives you. If your website appears to be only after their money through an overwhelming amount of affiliate links, then they are more likely to simply leave your site.