The book mentions that there is a wordpress cheat sheet located at dummies.com/cheatsheet. This does not exist. It also says that updates are found at dummies.com, but I cannot find those either.
Thank you for your post.
Here is a link to where you can find a bunch of Wordpress related articles on dummies.com: WordPress - dummies
The cheetsheet is located here: WordPress All-in-One For Dummies Cheat Sheet - dummies
Please let me know if you have any questions. Have a great day!