As you jump into the car for the first time and are in the garage, on your main screen you will see 6 practice programmes to choose from, including qualifying runs, race pace, tyre managment etc.. Simply choose one to start and complete it.
You have 3 laps in order to complete it and on screen you see a bar, red, green and purple, ideally you want to be in the right most purple zone for the most resource points to upgrade your car, but the green zone is fine anyway.