bttt for later reading—this is quite intriging.
So you don`t have to construct something out of wood, you can just put down cardboard, newspapers, soil and compost? Wow. That is amazing.
I’ve got seeds but was not looking forward to backbreaking work. I’m getting too old for that! :)
I’ll check back here when I have more time.
That's called "lasagna gardening". Look it up on the web. You'll find lots of information.