Cocos2dx 2.1.4 Universality, retina display, other resolutions and orientation.

~~My aim is to build my app for both iPhone and iPad. How do I make it universal, what should I be careful with when coding ?
~~Following that, how do I make the same app to support retina display?
~~having done that, I need to take into account different resolutions maybe? we have ipad mini and iphone 5.
~~finally how to make my app landscape only?

there are different sources on the net but non of them seemed to have worked for me “properly”. for example I did enable retina display under 6.1 simulator but my device dimensions keep coming up as 480x360 (in landscape). that is not correct is it?

I have not yet found a reliable source to pack it all in a single article for this new version of cocos2dx 2.1.4.

Please help since I cant advance any further before I set those initial stuff…

I could answer your question but I think this would better do the job. http://www.cocos2d-x.org/projects/cocos2d-x/wiki/Multi_resolution_support

Thanks Ill be reading this now, although I have other issues than just resolution. I will come back for more questions if any