My well water went below the pump and is now above to be able to pump water again... but my water line is empty... when I turn on pump and pressure switch clicks on... do I leave open a facet and let the air push through or do I leave all lines closed and let pressure build within the line?

my well water went below the pump and is now above to be able to pump water again....but my water line is empty... when I turn on pump and pressure switch clicks on....do I leave open a facet and let the air push through or do I leave all lines closed and let pressure build within the line?
Hi Stud and Welcome to The Plumbing Page. At AskMeHelpDesk.com.
Did you prime the pump before turning it on? Did the pump get up to pressure and shut off? You should always open a cold water faucet to bled air out of the line. Back to you, Tom