Wood Gasifier Project
https://www.youtube.com/watch?v=8YieLQOmbR0

More gasifier
https://www.youtube.com/watch?v=8YieLQOmbR0

Compressing wood gas into propane tanks
https://www.youtube.com/watch?v=Zygs9pb_zBw

Biodigester - Methane as fuel
https://www.youtube.com/watch?v=xAkIKxA3Jm0

Build a gasometer:

https://www.youtube.com/watch?v=5hfznunVzKY