How do you do a hill start in car?

Unless you are talking about a manual transmission, you do the same when you start it normally but you can also use the hand brake the same as the pedal brake. If you using a manual transmission you have to release the clutch just enough to hold the car in place when you take your foot off the brake pedal. This keeps the car from rolling backwards. Then you release the clutch while pressing on the accelerator. It takes practice.