dancingalone
Grandmaster
I don't know about Funakoshi's 'Karate Kyohan' being obsolete. Try reading His book 'Karate Nyomon' as well. More of the philosophy of karate do. Both books give you a perspective of the foundation of the shotokan karate do.
I've heard some people who follow Egami(sp) express that very opinion. Those of you who've seen followers of Mr. Egami's teachers know they've diverged a bit from what is considered textbook JKA shotokan karate.
For Manny, it is a bit weird that the chain of schools is called Okinawan Karate-do if it's shotokan that is taught. Just another reason to consult your sensei and ask for his guidance for any source books to read.