Okay, Julia's playing this and really enjoying it, but it's throwing a lot at her at once and she's having trouble sifting through. I can understand as the game is pretty confusing when it wants to be.
So we have one single question out of the many -- what are the big floating blue crystals? We've found some in item world and they don't do anything. They just float and twirl around. You can't target them, can't do anything at all. My immediate guess is that they're simply scenery, and I think I'm right, but the FAQs are woeful for this one. Anybody know for sure? Julia wants an answer and won't settle for "I think they just sit there and do nothing". =)