seobook.com is definitely worth the read, very well written and informative. Nice to re-read every 6 months just to get a refresh for the old brain cells!
You won't find much in hard copy. As suggested beforehand www.seobook.com does a good ebook, other than that I'd recommend blogs such as www.seomoz.org and http://searchengineland.com who aggregate pretty much anything going on in the SEO world.
This isn't book related but Rand Fishkin provides some great nuggets of information and good for any beginners to learn