Your first rental as a gold is no different than any other rental, except you can use the gold counter if it's open. Check your rental receipt to see where they expect you to go (note if you made the reservation before getting gold you need to contact Hertz to put your reservation under your gold number).

At the first rental you will need to show them your License and Credit card at the counter and they will process it pretty much as a regular rental.

At rentals after the first one, you look at the board and see where your car is parked and just get in it and drive away showing your license on the way out.