A video comparison demonstrating the importance of keeping the butt down longer in the first and second pull of the snatch. This is to ensure the athlete does not over shoot his shoulders over the barbell. This will result in a quicker torso turn over and help to sustain the use of the hips and legs when going vertical in the beginning of the second pull (scoop).
A short tutorial on making re-usable gymnastic grips out of athletic tape, helping to save your hands from ripping during a WOD.
a simple tutorial on taping up your hands before a workout to prevent ripping your useful callouses.
Kipping Swing/Hollow and Arch
Video 2 (comparison)