Might appear to be a strange suggestion but how about buying a workshop manual and reading the section about engine and gearbox removal. It may appear to be easier to ask on a forum but there is nothing like having it in black and white and written by experts.

As already stated buy a manual.

For preference I try to use factory lit,

And your going to need bearing seperators,pullers and possibly hydraulics,

Or a frendly shop with access to same.

Taking the box out shouldn't present any problems for an engineer.

Though if doing it on the floor I usually need two jacks and stands.

Also have a look on youtube there are some good step by step videos on there although maybe not for your car but its worth a look.