I'm still working my way through it on my Kindle - I've got to page 156 of 480, and am currently in the detail of desktop virtualisation. It's been really useful to help me understand some of the technical things I'd never understood about virtualising servers, and the current chapter is doing the same for desktop virtualisation.
A colleague shared with me a list of other free ebooks from Microsoft, that you may find useful too. Many of them are quite technical, so they won't be for everybody. I bet there are some staff or students around you that would appreciate this list:
Perfect Christmas holiday reading?