I just found out after beating the second level(with all the puzzles) that you aren't supposed to put the second one together just yet. Crap, but should only take a couple min. Anything else I should watch out for?
You want to know the best leveling spec for warlocks? here it is: http://www.wowhead.com/talent#IrhroGshsdhbM:RcsVdmmMz