If you have the tools, buy yourself a Helms manual and try and take a crack at it. The only way to learn in this case, is to try it. It is just a ton of unbolting and then you replace the gasket and then you put it all back together.

Have you done the basic diagnostics of determining if it is a blown headgasket? Coolant in oil, vice-versa, compression test, exhaust fumes from open radiator cap, etc would be a good place to decide whether it actually is the headgasket or some other unrelated problem.