The title to this post links to the new Bookshare.org website Training page where you'll find dates for webinars and Quick Guides! The link is in the bookshare section as well.
In addition, Read Outloud is available now and works for MAC users! Here is an excerpt from the website page READING TOOLS.
Software for Macintosh® computers
READ:OutLoud Bookshare Edition by Don Johnston
This DAISY reader is designed specifically for people with learning disabilities. It is not recommended for use with screen readers. This software features high-quality text-to-speech for multi-modal reading, spotlighting, note-taking and other study skill features, an online dictionary, and more. For additional information, visit the Don Johnston website.
To download this software, you need to be logged in as a Bookshare Member.
READ:OutLoud User Manual
There is also a planned Macintosh version of Victor Reader Soft that will be available later in 2009. In the meantime, Mac users can read Bookshare books in their browser.