um... there is an easier way. lol. when you get the xp circle full, drag the xp skill you want to lvl into one of the Fslots. then go into house or somewhere people cant see you if youre going to bed or w/e. and just use a piece of tape or something heavy to hold down that one Fbutton. dont touch anything afterwards and it'll just keep trying to use the skill and eventually it'll use it when the xp circle is full :D