This month's email from Microsoft Press brings an offer that might be of interest to people learning SQL Server Business Intelligence technologies:

Microsoft Press 25th Anniversary "Free E-Book of the Month" Offers

Help celebrate our 25th anniversary with a free e-book offer. Read your Microsoft Press Book Connection Newsletter for notification of offers, and register and download the selection each month. The monthly free e-book offer can be found in the top right corner of this monthly newsletter. The January offers expire on January 28, 2009, so download the e-books today:

SQL Server 2005 Integration Services Step by Step by Paul Turley, Joe Kasprzak, Scott Cameron, Satoshi Iizuka, and Pablo Guzman

As noted, this download offer expires Jan 28th.