ᐅ Aerated concrete (also known as lightweight concrete or foam concrete)

I have been looking for affordable alternative construction methods and materials for some time now, and I came across the following:

YouTube:
Foam concrete
Foam concrete house (Penobeton WBA)

This involves foam concrete, and I wanted to ask what you think about it.

Nothing, if you plan to build your entire house solely with this.
Just try searching online for its applications.