The Great Gatsby, appropriate education

Could you please tell me the precise meaning of "appropriate" and "substantiality" in this excerpt from the chapter six of The Great Gatsby by F. Scott Fitzgerald? Does it mean that :

1) Gatsby was left only with an education particularly suitable for his needs in life, after five years with Cody.

2) Gatsby thought he was going to get an inheritance but did not; this is a particularly suitable ("singularly appropriate") lesson for him to learn at this stage of his life, for it is a pattern which will repeat itself many times. This experience of losing something he wanted, without really understanding why it happened, caused Gatsby to grow up even more quickly than the rest of his experiences since he left home had done. In fact, it is this experience, this loss, which completed his transformation from boy to man.

"He was left with his singularly appropriate education; the vague contour of Jay Gatsby had filled out to the substantiality of a man."

Thank you.