The Bread Code

The Bread Code account is run by a very precise German man with a data-driven approach to baking and is useful in understanding the process end to end. He has a number of videos covering different techniques and discussing the pros and cons of each. This video is an excellent overview in 30 mins and worth a watch.

Bake with Jack

Bake with Jack is another good account for getting an overview of the process. Watch the first video above for a reliable method for making white sourdough; the second one covers wholemeal.

...plus some random useful vids

1. Troubleshooting: Sourdough can be a little fussy - here is a good overview of the main mistakes that bedevil beginners (and others!)