Wifi network & Internet to wireless network using i phone wifi hotspot

I want to set up a wifi network using Airport extreme to network macbook pro, PC, Apple TV, wifi capable printer & usb hard disks.

1. Can I do this with no internet connection

2. Can I connect this network to hte internet via my iphone internet connection using wifi hotspot when i need internet?

QA AirPort Extreme Base Station

QA AirPort Extreme Base Station

Product No Longer Available

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