[AppleCore Solutions](http://applecoresolutions.com.au/) this week released [The Complete Book of Mac OS X shortcuts: Desktop Reference Guide](http://www.applecoresolutions.com.au/?page_id=26). This 125-page eBook contains over 1,500 Mac OS X keyboard shortcuts for 16 Mac OS X applications. It also has a comprehensive list of operating system shortcuts and a table that fully clarifies Mac keyboard symbols and their meaning. It's available as a downloadable PDF for US$25. This guide is very well designed, and easy to read, search and navigate. If you're looking for a centralized source for OS X shortcuts, this is a good one. Hopefully it will be updated for Leopard and more applications will be added (such as Automator!).