Installing Doors

Can anyone tell me how hard it is to install door jambs, and if there is a good tutorial anywhere? The home improvement book only explains how to install pre-hung doors.

I have reasonably good woodworking skills, but if this is something better left to a professional, is there a rule of thumb for calculating the rough framing, based on the size of the door you are going to install? I would like to at least get the rough framing done.

By zil |