newbie - learn Solaris 10 or 11?

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http://www.unix.com – Hello, I looking for becoming a Solaris system administrator. Background: I consider myself an entry-level Linux system administrator. I don't know if I start my studies with Solaris 10 or 11. Maybe Solaris 11 because it's the new thing and the future, and Solaris 10 because since Solaris is used for many companies for mission critical systems, these companies are usually very conservative about upgrading, and Solaris 11 is still very young. (since Oracle will support Solaris 10 until January/2018) Also, I heard that the changes in Solaris 11 are really large, and a lot of stuff developed (HowTos)