A while ago I said on a thread that DS1s school were searching out their book on AS for me - the one they had read out concerning another child, that DS had recognised the symptoms from and realised that he too may have AS.
Anyhow, said book is this one. I have read it, DS has read it again, and it is a very simple explanation of AS that I would heartily recommend - written from a boy with AS's perspective of what he finds hard (eg. talking to people, co-ordination) and what he finds easy (eg. special interests) the only downside was DS decided he should have a special interest like the boys - dinosaurs, rather than his own of starwars.
Also, recently read Friend like Henry. Cried eyes out most of the way through! Realised when read it how much harder life was with DS1 when he started school, and how far he has come on since then.