How do you properly check the tire pressure on an Audi A2?

I recently bought an Audi A2 and I want to make sure I am checking the tire pressure correctly. Can you provide some guidance on the proper process?

To check the tire pressure on your Audi A2, you will need a tire pressure gauge. Unscrew the cap on the tire valve stem and press the gauge firmly onto the stem. The gauge will give you a reading in pounds per square inch (psi). Refer to your owner's manual or the sticker on the driver's side door frame for the recommended tire pressure. If the reading on the gauge is lower, use an air pump to add air until it reaches the recommended psi.