New to cacti need identification help

[Newbee]

I recently bought a cactus at a local store and was not given any instruction how to take care of it. I have the general idea of what to do, but i would like to know what kind it is. I'm not to worried about the scientific name but more whether it is a jungle or desert cacti. If you have any tips on sunlight and watering please feel free to tell me. The cactus is about 2 1/2 inches in diameter and 1 1/2 inches tall. This is a link just in case( https://imgur.com/a/L99Jb#n2QK1Xr" onclick="window.open(this.href);return false; ).

Thank you for your help!

[vlani]

Mammillaroa rubrograndis I think

[Newbee]

Thats what it looks like. Thank you!