Even though this is a puzzle game, that doesn't mean you'll have to be waiting around to make your next move. In fact, time is of the essence in many puzzles. Tap bubbles quickly and you'll be able to string together longer chains, and get bubbles you simply wouldn't be able to if you were taking things one at a time. This is actually an essential tactic in many puzzles, so think things through first, but use speed where necessary.