Rally cap by web

Stemming from the SimpleQuiz, I'm looking rather seriously into putting the question and answer concept into a book. The scope would most likely be more of a "web standards FAQ" -- with topics on structured markup as well as CSS tricks and tips and anything related.

What I'm looking for is a little help...

• What topics would be important to you in this type of book?
• What are common questions that one would come up against when diving into standards-compliant design/development?

The format is looking to be much the same as the Quiz: a series of topics each with a question posed, followed by exploration of available options, summary and extra tips based on the topic.

I'm open to hearing any and all suggestions. Feel free to email me directly as well. Thanks, fine people.