So, everybody has forgotten or didn’t see the blink and you’ll miss it shot of those ancient Jedi books stashed away on the Falcon? Rey may not have a living trainer, but she’s got the instruction manuals.
I vaguely recall a scene of her closing a drawer I think aboard the Falcon with I think books or paper of some sort inside though I didn’t take particular notice of the drawer contents. I do understand though that this is the shot you speak of and do remember it to an extent.
I’d hardly call them instruction manuals though. As I understood it, they were at most dogmatic preachings, stories and histories of the first Jedis, not a step by step instruction manual on how to master the force.