If you're considering a wiki or have MediaWiki installed then you need this book. It's well written, and user friendly - there's a card with the essentials of Wiki Markup Language and if you're nervous about transferring code from the written page to screen - a simple typo could take a good while to sort out (yes - I've been there) - then it's available on screen for 45 days for you. The cover price might look high, but believe me it's worth every penny and then some. I now have the sort of enthusiasm and ''excitement'' (yes - I know - I should get out more) that I felt when I first mastered HTML.