Clean looks very good. I teach a different approach to the jerk than the "dip and drive" version you're using here. Visualize the bar as a "whippy" rod that bends down at the ends at the bottom of the dip and springs up after the rebound. Then visualize the jerk as a bounce followed by a fast press that pushes you down under the bar as you split. If you hit the bottom of your jerk dip as a fast bounce instead of as a place to push up from, it makes the jerk twice as fast and explosive.
I know of no good Olympic weightlifting texts.