If you bought a Bluetooth keyboard and the @ is in the wrong place, it is probably because your tablet keyboard setting is in the UK format. Here's how to resolve that small problem
-Tap the 'SETTINGS' icon
-Under'PERSONAL' tap 'LANGUAGE & INPUT
-Under 'KEYBOARDS & INPUT METHODS' tap the settings icon next to the greyed out 'SAMSUNG KEYBOARD'
-Tap 'INPUT LANGUAGES' on the window that appears
-Choose 'ENGLISH (US)'
That should sort out your problem!
Acknowledgments to Johan Van Eeden (ZASTTRA.com Customer)