Quoting the post by our member Singh890 from an another thread. Without any doubt, very much valuable piece of tips it is:
PARKING on Hills.
If you are parking on a incline your front tires should always be turned in the direction opposite to the curb and if parking on a downhill than the front tires should be turned in the direction of the curb.
This prevents the vehicle from rolling back or down if in case your brakes get disengaged and in both the situations your tires will hit the curb and stop the vehicle.