Terra Preta Truffles: root to crown forestry

I stumbled upon an article about a restoration agricultural enterprise called Terra Preta Truffles.
Truffles are at the base of what they do but ,no where near the only thing.
For example:
“My grandad spent his whole life creating erosion gullies, my Dad spent his life trying to fix them and I’ve developed a new technique involving a geo-textile I have invented which makes it cheaper and easier to fix big erosion gullies and effectively turn them into underground green houses.”

Heres the link:

https://www.canberrabusiness.com/terra-preta-truffles-bringing-life-back-to-the-forest-and-creating-opportunities-in-the-process/

I want to grow truffles, can you tell the ways and means
I have a big oak tree and a bunch of baby hazelnut trees, just need the right soil medium, climate and spores?

bruce, the family behind this farm seem to have made breakthroughs in truffle farming that are game changing.
They have  many people asking to buy their expertise.
A revolutionary and proprietary production model for a luxury item is incredibly valuable.
For now they are keeping it to themselves,  while sharing some of the other restoration agriculture methods they have developed.

Bruce, where are you located? Depending on where you live, you might already have truffles nearby. For example, I live in Oregon and Oregon white truffles are found here under Douglas-fir, including my food forest farm.

If people are sincerely interested in growing truffles and are not into a get-rich-quick scheme, I always suggest that they check out Taming the Truffle, a book by Ian Hall, Gordon Brown and Alessandra Zambonelli. This is one of the best books ever written about truffles and truffle growing. Site selection, changing the soil pH, and finding the right tree and truffle species for your area are all crucial to success. Territorial Seed Company also now sells truffle- inoculated trees for those who wish to try growing European truffles.