2) roll down the driver side window and stick your head out of the car to see where the back of car is going, use the passenger side mirror to see the right side of your car and start backing in
3) use the parking line as your guide and if your car is parallel with that line, your car is straight
4) back in enough so your car fits the entire parking spot and make sure you have enough space on both sides so you and fellow passengers can get in and out of the car
it's not possible to park a car in reverse.
put the car in reverse. back into parking space. put car in park.
You might need these for at night!