I have no idea how to cook beans. Help!

Cici • Mama and Etsy shop owner! My etsy shop is SerenadeBaby
I've been craving mashed pinto beans for forever. All I have are canned. I really have no idea where to even start with them? Help me 😩. I'm a simple person so I'll probably just add salt and garlic powder but like I said, I havent the faintest idea of how to make these. :c.