How can I make my own sour dough starter?

I found this web page very helpful when I did mine: http://sourdoughhome.com/index.php?content=startermyway2

Here's how I started mine. What did other folks do? http://www.kingarthurflour.com/blog/2012/04/05/creating-your-own-sourdough-starter-the-path-to-great-bread/