MKIII Head Gasket Replacement

I've rencently bought an 87 turbo supra in great condition, other than the fact that is has a blown headgasket. I'm away at school so I realy have no garage facility to work in so I'm going to be working on this out in the parking lot. Could any1 walk me through the steps of replacing it (so i dont screw up my new car) I've worked on my