On most power steering systems the resevoir is higher than the pump. That
means the pump is gravity fed, so no need to prime. Hook all the lines up
and fill the resevoir to the proper level. Lift the front of the car up to
take the weight off the tires and turn the steering wheel lock to lock with
the engine off. I usually do this on a lift but a floor jack will work.
Check the fluid level again, if it is low fill it to the proper level.
Repeat until the fluid level no longer drops. Start the engine and shut it
off right away. Check the fluid level again and look for any air bubbles in
the fluid. If you see any air bubbles wait until the bubbles are gone before
you run the engine again. Start the engine again and turn the steering wheel
with the engine running. Shut it off and again check the fluid level and
check for any air bubbles. If you see any air bubbles in the fluid wait
until the bubble are gone before you run it again. Keep doing this until the
fluid level no longer drops and all the air is out of the fluid. This may
take a while but on some systems you cannot get the air out with the vehicle
running.

You're going to have to actually START the engine. Spinning a PS pump at
cranking speed won't fling the pump vanes out against the stator to
actually move fluid.