Shelters:

Primitive shelters:

https://www.youtube.com/watch?v=UJXODOaZfiE

With plane or textiles:

https://www.youtube.com/watch?v=ZV92xni5q8w

Cob Shelter:

https://www.youtube.com/watch?v=EzaobYDwCyE

Stone Shelter:

https://www.youtube.com/watch?v=z4AM0uXN-vo

Winter Forest Shelter:

https://www.youtube.com/watch?v=tf-PKoR6IR8

Arctic Shelter:

https://www.youtube.com/watch?v=8gI6q4R8ih4

Straw bale house:

https://www.youtube.com/watch?v=7h1SKGWSpmU

Pine Needle Shelter:

https://www.youtube.com/watch?v=E-_rlxGb7II

Tents:

Trashbag survival tent:

https://www.youtube.com/watch?v=kBZcWXdj-rQ

diy tent:

https://www.youtube.com/watch?v=5yxaVmW-Q1I

Trashbag survival uses:

https://www.youtube.com/watch?v=etyXHX5TH_g

Oilcloth:

https://www.youtube.com/watch?v=iqjfwhirsVo

WaxCanvas:

https://www.youtube.com/watch?v=23L6BMXiTDs

House Building:

cheap underground house:

https://www.youtube.com/watch?v=8B6xR3T37gI

Earthbag home:
https://www.youtube.com/watch?v=RiP1WJ2m-HU

Building with stones:

https://www.youtube.com/watch?v=mtQChQXKrkA