"Seriously not taking the piss"? Sorry, I don't understand
I know quite a bit about growing mushroom growing, but as I mentioned previously some of the best info is in Paul Stamets 2 books. It can get a bit complicated, and you need to provide sterile conditions. Not an easy task. Oyster mushrooms are quite simple and don't usually need the same sterilility so that is usually the best starting point in my opinion.
Good point Potawie I forgot about the logs, It would be cool to have a log down the side of the house growing mushrooms for a few years.
I wonder what other mushies could be grown in the bleached newspaper, or to the point what could be added in with the paper to enable other forms of mushies to grow. Any cheap house hold products would be great