I have a wood door between my garage and my basement. Why and how the
previous owner was able to put a wood door there instead of a steel one is
debatable but I'd like to replace it with a steel door.

As I'd like to try and tackle this myself, what is involved in removing the
door and frame and installing the steel one? I plan on going to Home Depot
and purchasing the door. Don't know if I should get a pre-hung door or
what.

Thanks for your assistance.

Walter