The books have already been written. All we have to do is read them.
To save you some time here is a good place to start that is easy to read. They will email you some really good basic information if you wish. They mention the sour dough breads which might be of interest to you.
Sally Fallon who is involved with the weston price.org has written a great book called Nourishing Traditions
Good luck.

https://www.westonaprice.org/