Sourdough Starter (and Sourdough Crackers and Sourdogh Pancakes)

It's Ann's fault. She posted a lovely picture of a sourdough bread she baked, and I wanted to make one. And since I had no starter, I started one (named Herbert for now). But Herbert-the-starter is very young, so as I feed him and wait for him to mature, I use his castoffs for baking crackers and pancakes so far.