Elves mature at thirty years old, physically and in the eyes of their peers. Nineteen would make him barely ten years old in human terms, something I presume you didn't exactly intend :3
Also I see Jacob's uncle was your old Olden character. Clever, but his method of teaching magic is a little sketchy. Magic in this universe is a monk-like art, much more about values such as resisting the urge to go further with it and destroy yourself, or control of the mana you're shaping. It's seriously dangerous stuff. If he passed out, sounds like his uncle let him go far enough to damage his own lifeforce enough that he lost consciousness - and that's not too kind.
Reading won't teach you anything to do with magic, and the one preset spell he knows does conflict with the properties of astramancy itself. Suffice it to say you couldn't hold it in a ball.
This is nothing major though, just some lore related kinks. I'll be happy to help you out as much as it takes to set a couple things straight, but it won't be hard by any means!