Well, Uncle Bob's recipe is technically not a sourdough, but it is an excellent recipe for no knead bread, a great technique for making a fool proof bread, popularised by Mark Bittman in the New York Times. You get an excellent result if you cook it in a hot dutch oven or pot in the oven. Basic technique is here, but there are tons of pages about the recipe and variations.
http://cooking.nytimes.com/recipes/11376-no-knead-bread
A sourdough uses a natural starter which contains wild yeast and lactobacillus, which gives a really tasty, almost vinegary (lacatic acid) flavor. You can make your own starter, but it takes a while to mature and develop. The one I have now is about 6 months old, and after a month I put in some butter milk to get a nice lactobacillus going.
Sourdough is really tasty but takes much longer to rise than normal yeast bread. I started the one I baked today at around 6:00 pm the previous day, so it was essentially a 24 hour exercise, not taking into account the time to develop and grow the starter.
Wikipedia has a pretty good description of the process, but there is a wealth of info around the web.
https://en.wikipedia.org/wiki/Sourdough
Like a lot of simple things, there is devil in the detail, and small variations in ingredients and technique make a big difference. The loaf above is a sourdough version of pugliese, a traditional Italian bread. Like ciabatta, and indeed the no knead bread, it is a very wet dough. You can take a lifetime to learn how to bake all the different kinds of bread. I reckon that Kamodo BBQ that Hard Luck has would be great for baking bread, because it can get very hot.
Since I am diabetic, I don't eat much bread at all, but the girls enjoy it, and I like baking, and enjoy the bit at the end of the crust!