This website is very simple to use, but sometimes it's fun to watch somebody else do it first. Also, this involves chicken nuggets as an example.
Here's a quick (okay, fine, 10 minute) video of Jon using PlaybookWriter. In this example, he explains how to prepare chicken nuggets as a meal for children.
Hopefully that video gave you a glimpse into how PlaybookWriter can easily create process documentation. But don't just take that video's word for it. You can literally create your own documentation (for free) by clicking the "New Playbook" button!