Baking Sourdough Bread - The Basics - Found a good general sourdough lesson after weeks of searching

Sourdough Baking, The Basics, by S. John Ross
http://www.io.com/~sjohn/sour.htm

I have been intrigued by the living challenge of sourdough, and baking bread in the modern world with some old-fashioned help from the yeasts and common tools at hand.  I have been surfing around reading various intro articles, on both commercial and hobbyist websites.  I haven't quite figured out how to get the true sourdough bubbles, but am still trying.

John's link above is one of the most informative web info sheets I have found so far.

The picture above has nothing to do with sourdough bread or culturing yeast, but is from a tortilla-making class we attended in the Mayan village of Chachoben last month, in the Mexican province of Quintana Roo.  Couldn't resist the juxtaposition!  We were on a land tour from Native Choice Tours, an unforgettable experience, off a cruise ship that stopped for the day in Costa Maya, Mexico.

That's the grill surface, perched above a wood fire and waiting for the tortillas to be dropped.