If your car has a manual transmission and the battery is dead, you can get it to start by pushing it and quickly releasing or “popping” the clutch.
Put the car in second gear, and push the clutch all the way in.
Turn the key to the on position.
Get someone to push the car for you, or, if you’re lucky enough to be on a hill, just let it roll!
Once the car’s rolling, let out the clutch and immediately give the car some gas. The engine should catch, and now you can drive it like you usually would. Just don’t let it stall!