James Freer jessejazza@yahoo.co.uk wrote:
http://www.amazon.co.uk/Debian-System-Concepts-Techniques/dp/1593270690/ref=...
Of those two, I'd go for the above one by madduck, especially if you have a bit of sysadmin experience, even as a hobbyist.
I'm not sure about killing trees for this in general. They're handy if you fry your systems to the point of not being able to obtain the latest electronic book, but otherwise the online books are pretty useful. There are some on www.debian.org, even.
Hope that helps,