Maybe this is common knowledge, but I recently stumbled on the fact that holding CMD let's you click-through a group when selecting. Previously I found myself double-clicking, a lot, or selecting the "Click-through when selecting" option in the inspector.
Now I'm finding myself holding CMD when selecting about 100x an hour, so I figured I should share, haha.
What about you guys? Find any tiny, should-be-obvious-but-maybe-I-missed kinda tips?