its not too bad and if you look around the web a couple different people have done write ups.

basically you have to take the lower intake off to get to the lifters. you need the lifters out to be able to take out the cam. then once you get that far you take off the front cover, remove the timing set, pull the cam thrust plate, and pull the cam out. from there its just reversing the process and making sure all your gaskets are sealed up nicely.