Here's a link worth bookmarking: http://drivelink.blogspot.com/ This blog is written by Dave Vickers, a chainsaw tutor at Sparsholt College in the UK. and its primarily aimed at inexperienced chainsaw users and arb students. But there is plenty useful information for anyone working with a chainsaw.
If you are interested in more information about chainsaw maintenanceor instruction (from someone closer to home) talk to Andy Neverman or Jerry Lynch.