Where can I get/read SQL standard SQL:2011?

Go to the ISO web site - you can search for 9075 and you'll get 13 hits for the 13 parts of the standard that can be ordered from their online store:

http://www.iso.org/iso/home/search.htm?qt=9075&sort=rel&type=simple&published=on

I don't know of any source where this standard would be available for free, unfortunately.