new and dont have a clue!

hi everybody!
Im in abit of a dilemma, ive just been given a leopard tortoise who is 3 years old. I have never kept a tortoise before and dont really know what im doing.
I was wondering if anyone would mind giving me some help with some questions?

What should i be feeding him?

How often should i bath him?

Ive been told to keep the uv and heat lamp on all day and then turn them off and keep the heat mat on all night, is this correct?

how often do they need exercise?

Thank you guys!! i really do appreciate all the help i can get

Many thanks,

Lauren