For the young man before you, you really only need to tell him some basic common knowledge about cultivation, and occasionally check whether he is deviating due to mental strain—other than that, you don't have to worry at all.
All you need to do is hand over all the messy cultivation techniques, mental methods, secret manuals, spells, and the like that you've collected to him in one go, without needing to explain.
He can learn them himself, assimilate them, and even adjust their power based on his own realm and that of his opponents.
Such a person simply doesn't need anyone else to direct or interfere.
Months ago, when Jiang Feng was retreating in his study and browsing through ancient techniques, I had specially prepared myself, waiting for Jiang Feng to come and ask questions.
After all, cultivation techniques and secret manuals are profound, and with sources from all over the world, there are bound to be different interpretations and descriptions.