INTERACT IF YOU KNOW ABT TOROISES!!!

So, I'm a bit of a tortoise nerd but not enough imo, so I'm calling out for some help

My parents have told me that this christmas they will finally let me have a tortoise and I'm like super happy but also super worried that I might not take good care of them.

So, do ya'll have any tips? and must and mustn't? I could really use some advice!!!