How to find and use fat wood:  SnaponJohn100  This isn't the best quality video but has excellent information on how to recognize the appropriate trees and how to harvest fat wood, and also how to prepare and use. Fat wood can be a valuable tool for fire in wet conditions.

How to build a concealed wilderness fire:  Prepper Advantage  In this video, he demonstrates the Dakota Fire Pit and how to make it a no-trace fire. I appreciated the care he took for the land as well.