As a manual or a guide?

as a manual for my game, can you help me

Do you want the PDF stored locally?

yes, I would like to open the manual inside my game  

can you help me?

It’s doesn’t natively support it but there are ways around it, check these links out:

https://stackoverflow.com/questions/28690209/how-to-open-a-pdf-file-in-cocos2d-x-project?rq=1

http://discuss.cocos2d-x.org/t/solved-viewing-a-pdf-file/28621