Essentially that's all you do.
Yoo don't NEED help really oh just end up running back and forth from the engine compartment to the cab. Look at it as exercise!
Screw the fitting into the spark plug hole, set the gauge on top of the valve cover, and crank the engine. 7-10 revolutions should be plenty, it really doesn't matter as long as you do it the same per cylinder.
The manual says 130psi. Is minimum.

A compression test reall will only tell you if you have compression. It won't tell you were you're losing compression from.
A leak down tester will be more telling.

Before you do anything adjust your valves.
If you are doing it cold add .004 to your measurements.
I= .006 hot add .004 cold so .010
X= .016 hot add .004 cold so .020

The expansion of the valve train is our enemy here you don't want any valves hanging open.
Re adjust them to spec after you've gotten it hot.. Not warm.

My .02

Jeremy

1950 Chevy 3800 1-Ton Long Bed
In the Stovebolt Gallery
More pix on Flickr

Sold all the bikes, leaving California behind.