Dynamic Wrestling Trips and Kick-Ups by Kendall Cross

Super effective

I really enjoyed this instructional and have begun implementing some of the techniques. Most of the positions are low risk and very applicable to submission grappling.

No-Gi O Uchi, Ko Soto, and Uchi Mata

This course give great insights to using three throws in wrestling or No-Gi. He covers an inside trip (no-gi o uchi gari), an outside trip (no-gi ko soto gari), and a "whizzer kick up" (no-gi uchi mata). He did an excellent job, and I recommend this tutorial if you want to learn these takedowns.

Great

An awesome set of techniques broken down in a way that you can immediately apply