Hello, I have been doing sourdough from quite some time now. My advice would be to search some dedicated channels on youtube. Pro Home Cooks, The bread code, Sourdough journey are all great sources of information. The quantity of information you can get can be overwhelming but the actual process is not so complicated and sourdough starter is actually quite resistant.

You can read the dawn of everything book which is a very interesting take at a lot of those assumptions which are indeed false. This book goes deep into the ideological bias scientists have when interpreting evidence.