This is a good book to use as an introductory guide to XenDesktop (covers version 4). It is not an in-depth technical treatise on the subject so don't expect that. It will definitely get you started with your XenDesktop implementation. My area of expertise is Citrix technologies so I found this book too basic and general as usual but it is a good resource for those who are just getting started. In all my years of working with Citrix products, there are no better resources than the Citrix guides, their support documents, forums and developer network. I have yet to see one single book on Citrix technologies that even comes close to offering any in-depth treatise except maybe Brian Madden's book on Metaframe XP Technical Design. I have started to write a book on Citrix several times and have been discouraged by the fact that I would have to leave a lot of details out. A great book on Citrix technologies aimed at high level administrators and engineers would have to include a wealth of information on Active Directory, Windows Terminal Services or Remote Desktop Services, Windows internals, Citrix internals, etc. It would be a major project to actually come up with such a book. I would strongly recommend that you read all the Citrix guides, documentation, spend time reading the forums, the Citrix developer network, and set up your own test environment to practice and test with. There is no better way.