Chris Kennedy's Use OS X Mountain Lion's New Features is a good, tight 46-page overview of the features within the newest upgrade to OS X 10.8, and it's a good one for all of those considering making the jump from Snow Leopard (version 10.6.8) or Lion (version 10.7.x).
This one is really written for upgraders from those earlier versions, and is excerpted from the author's larger 331-page publication OS X Mountain Lion (Tech 102), which covers OS X 10.8 in far greater depth and detail. Where this one fits in (besides having a bargain price) is that it's good for those who want a fast track into what's new and what's been pulled from Mountain Lion.
And typical of author Kennedy, there are those tricks, workarounds and quick tips that so often get overlooked, such as: "To sync Messages with Gmail (Google Talk), Yahoo (Yahoo Messages), or other services that support messages, choose > System Preferences > Mail, Contacts & Calendars, select the account, and then turn on Messages."
This is a small and concise book, one which I downloaded to my Kindle just before making the upgrade from OS X 10.6.8 to Snow Leopard to be better able to see the differences. Kennedy's final chapter, "Removed from Mountain Lion," was of particular interest to this reader, where he noted that the following programs and features have been removed or replaced:
* MobileMe has been replaced by iCloud
* Software Update has been replaced by App Store
* RSS support has been removed from Safari and Mail
* Notes has been removed from Mail (Notes is now a separate app)
* Java and X11 are now on-demand downloads
I first downloaded this to my Kindle 2 and found it to be well formatted on that device, but seeing that there was an active hyperlinked Table of Contents, along with a number of illustrations, I switched to the Kindle Fire, where everything showed up superbly. Note that this small book has unlimited simultaneous device usage, which is a very good thing.
This small "10-Minute Fixes" book is probably OK for new users who want to be knowlegable, but highly recommended for those considering the upgrade to OS X Mountain Lion (version 10.8). And the bargain price doesn't hurt a bit, either.