The Ontario Minor Hockey Association has some great tools and resources on their website for coaches.  Below is a brief listing of just some of these great tools:

• OMHA Drill Book 2008
• OMHA Handbook 2008 
• Coaches/Managers Manuals
• Skill Testing & Evaluation
• Coaching Tips/Articles
• Sample Practice Plans
• Hockey Canada Sample Drills
• Hockey "Video" Tips/Clips

Check out their site for more information.