To open stuff: click on it, then press the 3 buttons. (or a similar button if it changes) You may need to try a few times. If you use spit mode in creative, you can pull a stack (64 items) out. [Click slots] - Select Item [Click/Hold] - Place or Mine [Arrows] - Move / Jump [3 Dots] - Open/Close Inventory [click+3 dots] - Open / Close Chest, Crafting Table, etc. [Split] - Toggle split button [Hold+Press] - Eat food [?] - Label a sign or chest [?] - Drop item [?] - Pause / Unpause [command button] - Talk / Command [?] - Save your game [?] - Sounds [?] - Sprint To turn off/on music, use the command /music