I should probably tell you right off the bat that I have absolutely no business preaching to you about sourdough.  I love a good, tangy baguette as much as the next person, and while I do enjoy baking bread every once in a while, making sourdough at home has always seemed way beyond my skill level, something only to be attempted by people with far more talent and confidence than I have.  Truth is, I wouldn’t be talking about this at all if it weren’t for my lovely friend Sam, who recently gave me a portion of his own sourdough starter, which…