Hal Higdon--A classic resource for training programs for any skill level and any distance. Great beginner's running guide!
Great Trail Running Primer
Knoxville Track Club--Great info on upcoming races, local race results, and where to run in the Knoxville area. Also, joining KTC has tons of perks--discounts on race entries, 1 free race entry per year, and discounts at Runner's Market, New Balance, the Health Shoppe, and others!