Grab a cam and look at the lobes. That should tell you where you should set it. Some people like to pull each cylinder up to tdc and set valves but that will not be correct on many cams.
The EOIC (also KISS) method works because when the ex is opening the intake lifter is on the heel of the cam, and when the intake is closing the exhaust lifter is on the heel of the cam. No other method does that very well except maybe the one Crower has in the Crower book( I never really checked because the guys who race won't ever do it that way anyway).
You don't want to turn the engine over excessively because it is somewhat possible to start wiping a cam bearing from lack of lube and high spring pressure.