I can help slightly!
You put your middle 2 fingers and your thumb in the ball, line the ball the ball up with your shoulder, line your shoulder up with the arrow on the lane.
If you are able to roll your ball over the arrow and it goes to far to one side, then move to the opposite side on your approach until you get it right! Keep track of where you are aiming by using the arrows!
(to be really technical, you should take 5 steps before you bowl, starting on the leg opposite to the one you bowl with!)
:-)