Can i share my network drive outside?
Yes you can share it but it is very dangerous. You would share the drive as usually and you would get your family to connect to it by using you public ip address (go to www.whatismyipaddress.com to get it) and the share name. Depending on your ISP, you public ip address will change every few days or when you reboot your router. You may need to re-configure your router to allow the traffic through. This will open up you network for virus / hacking attacks. I would not advise doing it.