Hello,
My advise is .. in my experience is ... build and destroy your Lab. It has helped me out a lot. Also I would read more than one book. If I could suggest the Windows Server 2012 Inside Out by William Stanek or Windows Server 2012 Unleashed by Rand Morimoto, Michael Noel, Guy Yardeni, Omar Droubi, Andrew Abbate. Also go through Microsoft's Technet. Thank you for your time and have a nice day.
Kind Regards,
Paul