From John Tate
Here are some M1 info links. Some are appropriate for pure beginners; some a bit more advanced; none are very advanced.
Rifle Marksmanship with the M1 Garand Rifle
This is an excellent video for those who would like to know more about M1 Garand Rifle shooting. They are great for both the beginner and the expert who needs a refresher. The series focuses on the M1 but the techniques can be applied to any rifle. part one covers sling usage and shooting positions.
M-1 Garand Tips & Tricks series:
M1 Service and Maintenance