RE: which terminal do I want?
It’s by airline. Check here:
http://www.metroairport.com/airlines/
Most flights are in/out of McNamara, the big new terminal.
North is the old terminal (which is pretty cool, it’s like flying into a much smaller airport with shorter lines).
As Marina wrote, the signs are big and clear. Just look for “Short term parking”.
$3/30 minutes, $5/60 minutes.
If you must avoid the parking fee, I would park at one of the surrounding hotels. Then wait for your traveler to call and say, “I’m on the ground”.
But first swing through the airport and see how the waiting area is labeled. I think Mcnamara has labels “1” thru “7” outside the luggage claim (it’s been a few years). Then you can tell your friend “meet me at the curb by #4”.