Removing the door from your oven isn't as daunting of a task as it may seem. Whether you're replacing the door, or just taking it off so that you can give it a good, deep clean, it's a relatively simple task that any homeowner should be able to handle.
Turn off any gas or power supplies to the oven, and make sure the oven is off.
Open the door to the broil position. This is usually the last position that the door will stay open by itself before it closes.
Grab the door by both sides and gently lift it up. You should feel the hinges start to come loose from the oven base.
If necessary, use a screwdriver to help pry the hinges out of their sockets.
Unscrew the hinges on self-cleaning models in order to remove the door.
Lift the oven door up and out of the oven.