Otherwise, it’s as easy as adding a link to the video description and asking people to click on it. Coupon codes are a huge bonus (if your affiliate offers this) since often times, you can give people a discount using your custom code, while crediting you the sale, without them even having to click your affiliate link. This results in higher conversions. (Tyler Moore does this).
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.