Generally, the basic controls are "↑", "↓", "←", "→", "right shift", "/" and ".".However, this may differ from pc to pc but for the most part these are the controls that you should keep in mind.
The "↑" keeps your car moving forward or in other words, the gas pedal.
The "↓" slows your car down when you are moving but reverses your car instead when it is pressed while stationary. It is a two in one button that works as bothe the break and reverse gear.
The "←" steers the car towards the left. Left steering.
The "→" steers the car towards the right. Right steering.
The "right shift" activates your weapon or stops the rotating lottery if one is ongoing.
The "/" activates your mobility bonus or stops the rotating lottery if it is in one.
The "." Let's you see what is behind you and allows you to attack cars with certain weapons behind you to stun or slow them down.