Angry Asian
   The definitive guide to maintaining and tuning your mountain bike suspension fork.
   http://www.angryasian.com

Biking Articles by Sheldon Brown and Others
   This site contains a wealth of technical articles about bicycle maintenance for both mountain and road.
   http://www.sheldonbrown.com/articles.html

Chain-suck in a Nutshell
   Jonanthan Levy details the causes and mechanisms of chain suck and how to avoid and prevent it.
   http://www.fagan.co.za/Bikes/Csuck

Chainffect
   Discusses technical aspects of suspension systems on mountain bicycles, with technical illustrations.
   http://hometown.aol.com/rifkamuk/chaineffect.html

Mountain Bike Instruction
   Features fun and friendly off-road mountain bike courses for beginners in the United Kingdom.
   http://www.mountainbikeinstruction.co.uk/

Mountain bike mailing list faq
   Extensive FAQ compiled and appended by members of a mountain bike mailing list.
   http://www.faqs.org/faqs/bicycles-faq/mountain-bikes/

Singlespeed Mountain Bikes
   Many cyclists are rebelling against the excessive complication, fragility and weight of current mountain bikes. Discusses move to using simple, one-speed bicycles.
   http://www.sheldonbrown.com/singlespeed.html

The cycle shed
   Single speed, wheel building, t-shirt printing, yorkshire (UK) based stuff.
   http://www.thecycleshed.co.uk/