... Well, first of all, getting used to just being in the Dream Sphere would be the most important thing, I think. Your body moves and behaves differently over there and it can be jarring to try and fight like that if you're not used to it. After that...

[ She folds her arms across her chest as best she can with the folder in hand and hums to herself. ]

Working out what his powers are and how effective they are in combat. If they're not as immediately applicable, from there I'd just have him get used to using his powers at all before he ever fought a Torment or a Nightmare.