Very glitchy and slow at the moment. Click a block to mine it, click an empty space to fill that space with the selected block in your inventory. Q and E to change selected inventory slot. W,A and D to move I to open up inventory, select the crafting recipie you want then when you press space if you have the right things you will get whats in the output box to defeat a creeper: click on the creeper. dont get too close to it, because they can still kill you when dead and even though you have diamond armor. defeat a skeleton: press space to drop TNT on the ground to form a TNT block. it will land wherever the skeleton is. if it doesn't land close enough, lure the skeleton to it. (YOU HAVE TO DOWNLOAD IT AND PLAY IT IN PRESINTATION MODE TO HAVE IT NOT BE SLOW!!)
