Trying to learn more about what my roommate left behind.

A former roommate of mine moved out recently, and forgot some of his tequila when he did. I got the ok to keep them, and both taste great, but I’m not very knowledgeable about tequila generally. I was hoping some of the fine folks here could tell me a little bit more about what I have, as I’m looking to start exploring the world of tequila a bit more!