No more buying spendy tech reference books @ $30-50 a pop. Because they'll sit on the shelf (okay, in a stack on the floor) and become obsolete and you'll hate to throw them away but no one else wants them either.
Check out http://mseref.safaribooksonline.com/home?subpage=hometab1
. Monthly subscriptions start at $11.99 for access to 650 Microsoft Press titles. For a bit more, access titles from SAM, Que, Sybex and dozens more.
Going for certification? They've got the training kit books for that. Want to get into developing apps for smartphones? Yup. Those books are on Safari Books too.