These following resources provide great info on everything from properly fitting bikes to chain cleaning with tooth brushes to what to look for when buying your first bike.
21 Mountain Bike Hacks by Sacred Rides
Bicycle Owners Manual by Surly
Beginners Guide to Mountain Biking by Sacred Rides
Beginners-Guide-to-Mountain-Biking_Part1
Beginners-Guide-to-Mountain-Biking_Part2
Beginners-Guide-to-Mountain-Biking_Part3
Beginners-Guide-to-Mountain-Biking_Part4
Beginners-Guide-to-Mountain-Biking_Part5
Beginners-Guide-to-Mountain-Biking_Part6
Beginners-Guide-to-Mountain-Biking_Part7
Beginners-Guide-to-Mountain-Biking_Part8
Beginners-Guide-to-Mountain-Biking_Part9
Beginners-Guide-to-Mountain-Biking_Part10
Fat Bike Best Practices-A Guide to sharing the trails with skiers, snowshoers and moose
101 Tips for First-Time Cycle Tourists by TDA Global Cycling
Illustrated Bicycle Maintenance Guide for Road and Mountain Bikes by Bicycling