I never learnt about C++ but I'm good at lua. Is that hard to understand and use cocos2d-x(Lua)?

It’s a little hard for me to understand the C*+ code like :: std >> or something like that. But I ran the Helloword app by cocos-2dxLua. And
tried change some code, it really worked follow my idea.
But now I don’t know what to do, because it’s hard to find the tutorials that could teach me to learn cocos2dx-lua.
I know cocos-2dx is based on cocos-2d. So do i have the necessary to lean cocos-2dx’s c*+ mechanism? And if i want to learn, how much
time do i need to take?

Any suggestion would be appreciate.

Good Day everybody.