The best place to go and read about Zend Framework 2 is the ZF2's manual of course.
http://framework.zend.com/manual/2.1/en/index.html
I would also recommend you to follow the webinars at the Zend website that are related to ZF2
http://www.zend.com/en/resources/webinars/framework
BLOGS:
Matthew Weier O'Phinney is the lead developer of the ZF2 project and kind of the guy that know everything in ZF2. He has a blog where he shares interesting talks, concepts and ideas related to ZF2 and PHP.
http://www.mwop.net/
Even Coury is a contributor to the ZF2 and the creator of the ModuleManager. He has some great modules on his github and blog that are to be followed :)
http://blog.evan.pro/
Ralph Schindler is anothe contributors to the ZF2 that has a blog and often post cool things and concepts about zf2
http://ralphschindler.com/
EDIT for the blogs part:
I recently found out that the framework.zend.com website provides a list of the contributors of the project. This list provides information about the github accounts and the blogs of those contributors (if they have stated any). Looking there you can also find useful resources about ZF2. Here is the link:
http://framework.zend.com/participate/contributors
And there is one guy Alexander Romanenko that makes a you tube seria about ZF2 application development. He touches on a lot of aspects and important components of the ZF2. Right now there are 9 videos where he starts building application taking into consideration a lot of things related to day-to-day web development
https://www.youtube.com/feed/UCLgC6BIGw2brdJK7Lb4elpg
Hope this helps :)