Upgrading from Anti-Virus to Internet Security, and adding a second laptop

Joshua, Have a look @ this webpage (http://www.avg.com/ww-en/upgrade). Otherwise, Please contact Sales Support… Chat with us [AVG] online (http://bit.ly/1bsBJfY). 
AVG Guru

Joshua, Have a look @ this webpage (http://www.avg.com/ww-en/upgrade). Otherwise, Please contact Sales Support… Chat with us [AVG] online (http://bit.ly/1bsBJfY). 
AVG Guru

just to clarify, my current license covers 1 laptop only, it is 'AVG Antivirus 2015 (Full, 1 computer)'

Hi, I currently have AVG Anti-Virus 2015 and it is due for renewal.

I would like to upgrade to the full Internet Security service, while also adding a second household laptop.

Could someone please break down the steps I need to take to do this?

Thanks for your help,
Josh

just to clarify, my current license covers 1 laptop only, it is 'AVG Antivirus 2015 (Full, 1 computer)'