After watching the Netflix 4-part series "Cooked", based on the book by Michael Pollan of the same name, I got the itch to try making long-fermented sourdough bread to provide my girls with a healthier option for their school sandwiches (here's a good article that lays out the basics of why long-fermented sourdough is healthier, and here's another talking a bit about artisan breads, bakeries and sourdough benefits as well). The only ingredients in the bread I make now are water, flour, and salt.
Anyway, long story short, after playing around with a couple of different sets of instructions on how to get your own starter going, I settled on this method for starting and maintaining the starter (also known as "levain"), and have successfully done this for a couple of years now.