What is an affiliate link? It is a URL that contains the affiliate's ID or username. Advertisers (like Amazon or Etsy) use them to record the traffic that is sent through the affiliate and then provide the affiliate with a small payment in exchange for their advertisement.
I am a participant in the Amazon Associates Program, which means that I use the program to link to products I actually use and own.
If you click the link, it stores a cookie on your device. If you purchase the product I linked to, I get a few cents from the sale. This does not pass on any type of cost to you, it's just the way that Amazon compensates me for referring you.
Making a few cents here and there adds up, and I am able to use the money to purchase more taxidermy and jewelry supplies so I can keep making tutorials and stuff. So, if you purchase anything from my affiliate links, thank you!