"Expecting a game similar to Ocarina of Time"? Personally, I've never believed Twilight Princess was
that much like OoT. Yes, the first three dungeon ideas are recycled (forest, fire, water), but the plot is completely new, the characters are different, and controls (like the wolf) are completely new ideas.
You'll understand more about the wolf form when you get to certain plot points in the game. I won't spoil it, so I suppose you'll have to play it for yourself.

TP is a really fun, albeit easy, game to play, and I reccomend you at least try it again. It won't take to long to get through the wolf forms, and when/if you do, you'll be glad.