You answered that you would lead the 2 of Hearts. This is the correct lead. You are trying to establish your Heart suit, and are leading to the Honour in the Dummy.
Now it is West's turn to play. Here are his remaining cards:
Spades
J,8,3
Hearts
A,8,3
Diamonds A,10,9
Clubs
9,4,3
There is much to be said about defending against No Trump contracts, which includes such things as DUCKING, or refusing to win cards that are yours to win. However, that is a rather difficult concept to come to grips with, so I am saving that for a much later chapter.
18. What heart should West play now?