Windows Vista Instant Search is really a cool feature that brings the search capabilities built directly into the OS help in locating the documents, music files, photos, emails and whatever else you're looking for quickly.
On the other hand, Windows Vista Product Guide - a great resource on all things Windows Vista - is now available for FREE in paperback. All you have to do is pay for shipping. Order your copy here. I should note that the paperback guide doesn't include the new stuff in SP1, but you can download all of that information here.
Source:→ Windows Vista Blog