Where is south west terminal and which parking lot do I use

You have terminal A and B, you must choose where you want to let your car

I believe A is the route u would take

They also have the new terminal C

Where's American Airlines entrance

A is closest, but C and Satellite Parking are cheaper. See https://orlandoairports.net/parking-transportation/parking/

Where is the text parking lot for southwest arrivals

Check website