How do I set up to access my CAMERAS when I'm away from home.i have the newest bt hub
You will have to use a DDNS service that is supported by the BT home hub. No-IP is one such service. You can assign a host name which will always point to your public IP address.
You create an account with them, and then enter the details into your home hub.
You will of course have to setup port forwarding to allow your cameras to be access from the Internet.