tips for a beginner

Howdy, greets from Italy,
I would like to know if someone could help me,
I want to write something using cocos2d-x but I have only a small java knowledge and afaik I need to learn c++
Could someone point me to a good and easy book to start (my goal is c++ for cocos2d-x , don’t need a ref book, I prefer simple ones)
Just to have some basic stuff in order to follow the wiki and the samples…
Thanks in advance!

anyone could help me?