Here's a video that I've seen several times. It's so good. You will love it. It's only about 16 minutes long, so take a few minutes and watch it - you will be happy that you did (click on photo below for a link to the video).
Oh, and I also thought I would mention that grouting is HARD! Now it's done and the floor looks great, but oh, are my shoulders, wrists and elbows sore. Worth it? Yeah, man.
"The only place where success comes before work is in the dictionary." —Donald Kendall
"The sum of wisdom is that time is never lost that is devoted to work." —Ralph Waldo Emerson