Han började träna med Luke. Från WGA-skript:
HAN
There was nothing we could've done. (hard for him to say)
There was too much Vader in him.
LEIA
That's why I wanted him to train with Luke.
I just never should have sent him away.
That's when I lost him. That's when I lost you both.
Vid sidan av Novelization diskuterar Snoke uttryckligen med Kylo Ren att han skulpterade honom BASED på sin träning med Luke.
"It is your teachings that make me strong, Supreme Leader"
Snoke demurred. "It is far more than that. It is where you are from. What you are made of. The dark side--and the light. The finest sculptor cannot fashion a masterpiece from poor materials. He must have something pure, something strong, something unbreakable, with which to work. I have--you"
Ytterligare bekräftelse från TFA Visual Dictionary:
Having studied Jedi skills as well as arcane dark side lore...
och hans träning med Snoke nämns också:
Kylo Ren is the most gifted apprentice of Supreme Leader Snoke... (of course, we can also see the same from film dialog)