9 books
Select Effective Visuals
Present It So They Get It
Delivering Your Message with PowerPoint
102 Tips to Communicate More Effectively Using PowerPoint
The 20% You Really Need to Know about Data Analysis Using Excel
The 20% You Really Need to Know about PowerPoint 2002
The 20% You Really Need to Know about PowerPoint 2000
Don't Let Your Next Presentation Be a Career Limiting Move
The Visual Slide Revolution