Resources and grouped by subject. This is a continually improving list - please feel free to suggest additions and improvements.

Air

• Corsi–Rosenthal Box is a simple, low-cost air filter that could be used to improve indoor air quality in bushfires.

Shelter

Water

Food

• The Urban Farm Podcast is a great podcast about growing food in urban situations, with excellent monthly episodes on seed saving.

Collapse

• Breaking Down Collapse Podcast starts with an excellent 8-episode introduction to collapse.
• The Great Simplification is an excellent podcast and youtube channel with many expert guests covering all aspects of our predicament.
• Ashes Ashes Podcast
• The Collapse Sub-Reddit used to provide excellent discussion, but has fallen off a bit in quality now that the topic is becoming a bit more mainstream