This very well done video will show you how to tap pine trees and gather sap. You will discover the various specialty mixtures of pine sap for making things such as tools for chewing gum, water sealants,and concrete. http://www.thegoodsurvivalist.com/8-amazing-survival-uses-for-pine-resin/
Ultralight backpacking tips. Finding the sweet spot for the night and a good example of a lightweight sleep system.