Turn the key in the dead car to start and it should fire right up! As long as you don't have any issues with your alternator, you can disconnect the jumper cables right away.
Disconnecting the Jumper Cables:
Disconnecting the jumper cables doesn't need to happen in any specific order, but be sure you don't let the red and black cables touch each other at the end when they are still connected to one battery.*
Important TIPS:
*If you want to be sure, you can disconnect the black (negative) cables first, then go back and disconnect the red. Remember, the red (positive) cables are the ones that can cause a short of they touch the car while they are connected to the battery.
*If the dead car doesn't turn over or turns over very slowly, check to see if your battery or connections are corroded. If they are, sometimes a little wiggling while the cable clamp is connected will make your connection better. Otherwise, it might be a good time to clean your battery connections.

