I don't know what kind of turtle is it but I just saw it in the grass when I passed by the park. I felt pity for that turtle so I brought it home but I don't know how to take care of it. I don't even know what it eats.
You can call a pet shop, ask them if they take care of turtles, and if they do, take the turtle into them so that they can see it, and find out what kind it is, and what to feed it. They should be more than willing to help you with this. Good luck.