After the game loading screen, choose what you want from the engine options and press the select button. You will encounter many levels, but you have to start from the first chapter, the other chapters will be unlocked as you complete the track. If you are playing on the computer, you can control the engine with the arrow keys on the keyboard. You can drive forward with the up arrow key, and break with the down arrow key. If you are playing on a phone or tablet, you can easily direct via the touch screen.