Havnt done one in ages but its not hard mate.
I will presume you know how to remove the door trim.
Then you will be face with the bare metal.
Undo the electrical connector from the motor.
The window is atttached to the regulator by a plastic lug that goes through a hole in the glass.
This will have a fork clip on it, remove this by pulling it. Be carefull, they do break.
Then release the glass from the plastic lug and slide the glass to the top of the door frame and tape it there.
Then you have probably 4-5 10mm bolts/nuts to undo.
Then the regulator will come out.
Then refit in the reverse of removal.