"You don't have to be an Arctic survival expert or rocket scientist to improve your heating situation. The same principles that we use in designing efficient woodheaters (thermal mass, insulation, radiant heat convection control, materials choices, and many others) can be applied in different ways to improve almost any shelter.
Simple Shelter is a 12-page booklet, outlining a wide range of ways to stay warm.
The first section is mostly about personal and survival shelters, and personal comfort. The second half explores important factors in improving the comfort and heating costs for a large, permanent home.
Give some love to the empire andbuy the booklet here!!