Non li conosco, ma se vuoi dei libri validi, allora sono questi al 100% :

Parti con questo:
http://www.amazon.co.uk/ActionScript-Flash-MX-Definitive-Guide/dp/059600396X/sr=8-4/qid=1172301109/ref=pd_ka_4/203-3253421-6052714?ie=UTF8&s=books

Poi questo:
http://www.amazon.co.uk/Essential-ActionScript-2-0-Colin-Moock/dp/0596006527/sr=8-1/qid=1172301109/ref=pd_ka_1/203-3253421-6052714?ie=UTF8&s=books

Infine questo appena esce:
http://www.amazon.co.uk/Essential-ActionScript-3-0-Colin-Moock/dp/0596526946/sr=8-5/qid=1172301109/ref=pd_ka_5/203-3253421-6052714?ie=UTF8&s=books