The Question Writer 3 Manual is available now as a Wikibook. There's a lot of information in there already and this will eventually become a comprehensive guide and reference for everything Question Writer 3 related. The Wikibook can be edited by anybody - don't be shy, if there's something you want to add or expand on, click the 'edit this page'.
I expect some vandalism and inaccuracies over time - but every so often, after I've tidied it up, I'll publish a PDF export.
Question Writer 3 has actually been out of beta since the beginning of May - the drag and drop matching was the last feature I wanted to get in for the release.
You might wonder why I didn't tell you! Well, we've been working on a new website for Question Writer and I wanted to announce both at the same time, but the new website has had some delays. It looks like there might be some more with the website - but just so you know, Question Writer 3 is out of beta and good to go!
Question Writer 3 has a lot more features than the older version and is generally nicer to use and produces better quizzes - if you purchased after February 2007, you're entitled to a free upgrade and your existing license should work with QW3. If you need to purchase an upgrade - they are available from the pricing page -
http://www.questionwriter.com/pricing.html