Ethernet tutorial 
Contains an in-depth introduction to local area networks from Lantronix.
The Ethernet network technology page 
Provides information on Ethernet (IEEE 802.3) local area network technology. There is a drawing of the first Ethernet system, along with several links to quick reference guides, and related resources.
D-Link Systems, Inc.
Home page for D-Link Systems Inc., manufacturer of hubs, switches, routers, transceivers, adapters, repeaters, media converters, and print servers.
Ethernet Tutorials and Resources
Good collection of links to Ethernet information, including tutorials, FAQs, and guides. This page is hosted by the InterOperability Lab at the University of New Hampshire.
Ethernet/Fast Ethernet Technology Center
Contains information on Ethernet/Fast Ethernet technology, including articles, columns, test results from industry studies and test summaries, book reviews, and useful links to other sites. This page is hosted by The Tolly Group.
Migration to Switched Ethernet LANs
IBM white paper describing how to migrate from a normal Ethernet configuration to a switched Ethernet configuration. Includes a description of full-duplex (FDX) LANs.
Quick reference guide to Ethernet
Provides links to documents describing Ethernet, components, media, the Auto-Negotiation system, multi-segment configuration guidelines, and information on the Ethernet Configuration Guidelines book.
Yahoo!'s Ethernet page
Yahoo!'s directory of Ethernet.
Open Networks Today
Networking news moves at a fast pace, and Open Networks Today lets you keep up with it. Open Networks Today offers its readers the ability to control how news is presented through customizing content filters, discussions, and news feed links.