Ok to duplacate items just bought when it tells you to eguipt (sorry bad spelling)press select and you just got one free yay
Ok to duplacate items in multiplayer ok both players save give the player that is duplacting items the item save that game give the item to the other player (make sure they are the host) then the player that is NOT the host turn the game off then back on then both players have the item do as many times as nesasary (sorry again bad spelling)
When you have defeated a boss you can return to were you fought them and there will be a circle on the ground that will teleport you to the boss that you defeated in that area. This can be done in any mode.
When you have completed ALL the Library events go back there and defeat the enemies in the first area and a warp point will appear. This can be used to enter a room where you can put a book onto the bookstand to battle the Bosses from Final Fantasy: Crystal Chronicles - Ring Of Fates.