I found this gem as a PDF, its the book I give our new guys to read that they never do, its what I started with. This is a newer edition with newer info and a different author than mine, but its an excellent nuts and bolts resource if you have any young pups wanting to get into the network game.
http://143.95.72.211/ebooks/sams_teach_yourself_tcpip_in_24_hours_4th_edition.pdf Note, its IP housed, so may not be DMCA compliant
