I'll give it a try.
First off; Do you have a big block or small block?
It's a lot easier if you have the intake off and, if a big block, have the valley pan off to be able to see the cam and lobes.
You want to start with one number cylinder just for S.A.G's. Jog the engine 'til the lobes of the cam are off of the lifter. (On the flat of the cam lobe). Either exhaust of intake, it doesn't matter.... Looking very closly at the lifter, loosen the adjuster then tighten it until the push rod just starts to depress the lifter piston. Then thighten 1/2 turn more. Do the same, with the same proceedure, for the other 15 valves.
I hope this helps.