Question? I've bought 4 second hand doors have everything but a plane. All geared up to do it. Most people are telling me get a professional in. Friends who said buy and we'll help are now telling me get a professional in. Is it really that hard and would my money be wasted buying a wood plane, plain..... More of a **bleep** than anything
There's steps on how to hang a door on the Bunnings website that is a good place for you to get started. Then you might be able to ask more specific questions of Workshop members to help you complete the job. I'm sure you are more than capable of the job!
I'll also included the video below.