keep getting "cannot connect to iTunes store" message?

Try closing the iTunes store and the app store using the bottom bar (press the home button twice), if that doesn't work, reboot your iPad.

Check if your country have access to iTune Store and the items you can buy.

http://support.apple.com/kb/TS3599

This is a support article that you should start with. Use the links at the end of this support article for more things that you can try as well.

Can't connect to the iTunes Store