A very simple achievement. Right from the start you have access to 5 races. However, you will need to travel to them if you haven't already passed over them when you have been driving. The race you do in the tutorial counts towards this achievement. Some races are class specific so you might find you need to upgrade to the next class of car to compete in a certain race. It is likely that there are only level F & E races at the start. Since your first car is a level F, the cheapest level E is the Ford Mustang Coupe which is still competitive in the class.