some tools differ from motor to motor, year to year, but some of the general tools that most need go like this:
Good set of sockets (1/2" drive and 3/8"drive)
wrenches, pliers, (at least any tool you'd find in an everyday box)
Feeler gages, deadblow hammer, piston ring compressor, tourqe wrench, harmonic balancer puller, plastigage for the clearances, motor assembly lube, cam break in lube, PATIENCE, gasket sealant, carb tools, depending on your ps pump you may need a gm puller for the pully to take the pump off.
Some of this stuff can be jerry rigged or bypassed but this is just a general list.
Since it's your first and your unsure of practices I recommend you take the block in for hone / bore, heads in for general rebuild, and if your unsure of anything as your working on it, ask around and dig for info before wrecking something. Sorta like the old addum "cut it twice and it's still too short"!! You really don't want an oops on a motor rebuild.
HTH
Hollywooding