The A+ Certification & PC Repair Handbook (Charles River Media Networking/Security)

http://www.ieee.org/portal/index.jsp. This site is the home of the IEEE standards. The IEEE standards, as well as updates to these standards, can be viewed at this Web site.

http://www.geocities.com/SiliconValley/Monitor/3131/ne/osimodel.html. This Geocities.com site has an OSI reference model chart that describes each OSI layer, as well as associated protocols and network components. It is simply fantastic for basic networking study.