Technical Information
A wealth of technical information, and a glossary of bike terms from the late great Sheldon Brown.
http://www.sheldonbrown.com/
The Park Tool website offers some helpful illustrated articles on basic repair and maintenance.
http://www.parktool.com/blog/repair-help
YouTube is an excellent source of technical information. Type a repair topic into the search box (e.g., "install ISIS bottom bracket") and you'll get simple and clear instructional videos.
http://www.youtube.com
Bike Forums is a searchable forum for bicycle enthusiasts. Here you can find reviews of bikes, components and gear as well as a wealth of other bike-related information. You must be a member to post, but anyone can read and search the forums.
http://www.bikeforums.net/
If you obsessively count grams on your road bike build, then you must get aquainted with the weight weenies listings - a comprehensive list of both claimed and actual weights of many bicycle components.
http://weightweenies.starbike.com/
Bicycle Tutor has video tutorials for bicycle repair and maintenance.
http://bicycletutor.com/
Bike Travel & Adventure
Pedaltours, Vacations for cyclists since 1985. New Zealand, Australia, Vietnam, India, from 2-23 days. www.pedaltours.co.nz 888-222-9187
Great Explorations, Great bike journeys of the world. North America, Central America, Europe, Indochina. www.great-explorations.com 800-242-1825