Hi Andrew,
You'll need a fair number of tools to undertake any serious repairs...and even if doing simple things like transplanting a movement/dial into a new case.
Before splurging on a course or a DVD, I'd recommend compiling a list of the tools you will require...then price them out and determine your budget.

I recommend:
fine-point tweezers
hand-pulling tool
jeweler's screwdriver set
pin vise
case wrench
movement holder
watch paper
cleaning apparatus (ultrasonic, solution, rinse)
something to blow clean, dry air (to remove dust, etc)

That's a basic start, perhaps some of the other chaps here can elaborate.

Good luck!