norton setup : If you have purchased Norton setup key card from Amazon or any retail store and now wondering how to install the software, go to www.norton.com/setup. Create a Norton account and enter Norton product key in its respective field. Follow by downloading and installing the software. Depending on your subscription, synchronize all the devices using the same Norton login credentials associated with norton.com/setup. If the plan is expiring, renew the subscription from your Norton account. This will keep you updated with all the latest change or available Norton update.