Sage Dynamics offers quality firearms training for police, military, and civilian. They cover a wide variety of practical shooting applications with many years of experience in the military, police, and competition shooting. When these guys provide advice, it’s best to take notice.
Here are some thorough, albeit long, videos covering the ins and outs of shooting a rifle standing, kneeling, and prone.
Shooting a Rifle Standing
Shooting a Rifle Kneeling
Shooting a Rifle Prone
Sage Dynamics is definitely a firearms YouTube channel worth following.