This is where the current version of the CHDK AllBest User Guide pdf will be linked. Many thanks to Graystar for compiling and updating this guide!! Current Version (May 2008): A later user guide, CHDK User Quick Start Guide is now available (Latest update October 2010). It is a compilation of Allbest and Morebest manuals, with updated content and images, in a printable book or booklet format (.pdf). Available at:- Comments, (Errors, suggested additions, etc) can be left at