AR 670-1 (Wear and Appearance of Army Uniforms and Insignia) is by far the most referenced publication by an NCO when correcting young troops. Ambitious specialists should know grooming standards for both males and females (hair, nails, uniform, keys on belt, etc.).
TC 3-22.20 (Army Physical Readiness Training), published AUG2010, is the new Army physical fitness manual incorporating wholesale changes in organized PT.