The Barnes and Noble Nook has no built-in ability to run third-party apps, despite it being built on Android. The only way to have a Nook run third-party apps, is to jailbreak or "root" your device which naturally voids the warranty and may not even be possible on newer models of the Nook.
You purchase them through the store and they download onto the Nook automatically.
No it can not.
You can download several PDF files onto your computer and then transfer them onto your Nook Tablet.
A "Nook Book" is what the ebooks are called through Barnes & Noble.Assuming your question is something to the effect... Is the Nook Tablet Android based, Yes it is.
Not legally...
You can download things into your Nook from any computer.
Yes. I have downloaded music from itunes to my nook.
You can find free Nook apps on the Barnes & Noble website or in the Nook app store on your Nook device. Simply search for "free apps" in the app store to browse and download a variety of free apps available for your Nook.
That is basically the point of the Nook. You can get the books from your computer and download it through the USB cable that came with your Nook.
Connect the iPod to the computer go to iTunes find music click download and in a few sec. you have music on a nook
The iPod Nano does not use apps.
Yes, you can still download apps and music on itunes OR You could go onto Cydia and download some stuff (Installous=Free apps and dTunes=Free music