use a bungee cord to hold the wiring out of the way (ghetto, but it works) then as enslow said, it's just push and turn. The PCV valve is under the MAP on Vin-K 3800's, not on the Vin-L engine in your car, so your repair manual is incorrect.
As far as where to check the fuel pressure, there is a schrader valve with a black cap on it near the fuel pressure regulator, this is where you attach the fuel pressure gauge. Check the pressure with the key on/engine off first (should be 41-44 psi), then start the engine and it should drop 3-7 psi. With the engine still running, pull the vacuum hose off the regulator and the readings should jump back up to near key on/engine off readings.