Potty training advice?

Help! This weekend, we're attempting to potty train.

We were originally planning start potty training right before the holidays, but decided to wait until our trip was over. (We figured diapers would be best on car trips and airplanes.)

But, now, we're ready. A reader recommended this website, which instructs us to spend a weekend at home with Toby totally naked. Sounds strange, but the site says it helps your child realize that they're not wearing a diaper and instead should use the potty. Is that what you guys did? Did it work? I'd be incredibly grateful for any tips and advice.

Most of all: Go, Toby! What a little hero!

(Photo of Toby from the holidays)