@AdobeAE notes that Mark Christiansen will appear at the Apple Store in downtown San Francisco on Thursday November 18, 2010, 6:30-7:30 pm:
"Join Mark Christiansen, author of Adobe After Effects CS5 Visual Effects and Compositing Studio Techniques, as he discusses how the world has been changed by advances in visual effects and compositing. Not sure what a compositor does? Mark will demystify effects compositing and demonstrate why it's such a valuable craft."
It looks like Peachpit has a Book + eBook Bundle, which seems pretty handy.