I don't mean to sound rude or anything here, but what instructions do you need? You put in your characters current level in the top box. Then you put the level you want your character to be in the second box and click the button. It then tells you how much XP you need and how many foes of a certain level it would take to obtain that level. It's pretty much useless as far as I can tell, and to fully serve it's purpose it should have another box for number of party members.
PS: You do realise you need to unzip it first, right?
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