Here's a good spot to parallel park.
Now, put on your blinker so other people know that you're taking that spot.
Now pull forward and see if your car will fit.
Now, pull up forward so that you're parallel with the car in front.
Now, put the car in reverse and start backing up.
Now, slowly back up while turning the steering wheel all the way to the right. As soon as you clear the taillights of the car in front of you, straighten the wheel and turn it all the way to the left.
Now, shift from reverse to drive and straighten your car out.
You have now sucessfully parallel parked!