well, digimon world 4 is new to me but i'm making a great progress. anyways in the beginning it's so hard. usually you start practing the first time that you play it. keep practicing and you'll have items in no time. also in death valley, after you cross the first wooden ridge, keep moving foreward until you find two ways, go to the upper(right) one and you'll find a dead end. fight the goburimons and when you finish there are boxes. one of them contains a gate disk, use it when you are about to die. so when you return(to the main lobby) go to the shops and sell unnecessary items. and buy more gate disks. repeat this routine until you have everything that's written 9. ask me again if you're stuck somewhere, i'll help.