If you are serious about your studies of Shotokan karate, especially if you have aspirations of being a teacher someday, there are some books that you really should have in your reference library.
The most important book by far is Dynamic Karate by Masatoshi Nakayama, which is essentially the JKA syllabus of basic techniques.
If you order on-line through the internet you can get brand new or used copies for very little outlay, often including free shipping. Check out these two websites before you consider purchasing from a local book store: UK Book Depository and Abe Books.
Put it on your Christmas list. Stat.
Shotokan Karate-Dō Upper Harbour Dojo 