Cloud storage works on the Nexus 7 by uploading all of your information to Google Drive when you connect your accounts. Having the cloud storage allows for more free space on your phone for information, pictures, and other items as it stores it in a remote, secure location.
Depending on the app, you can place files that are held in the Nexus 7 out into cloud storage. It would provide a bit of peace of mind that you have a backup of that file at an external location. Some apps will automatically upload into the cloud to take out the hassle of copying those files out there. In addition, you can later access (or even play them from the cloud...Google Music for instance) them at the Nexus 7 or any Android device, or even on a desktop or other operating system. You can also remove those files from the cloud if you no longer want them stored there.
Probably you should ask yourself if specs are more important? Is storage more important? As devices are moving more and more into the cloud, and the typical Nexus 7 is wifi only, getting the newer, better spec'ed 16 GB Nexus 7 would be the better option. However, if you value storing files such as music or videos more offline, then the original Nexus 7, which still has decent specs to hold its own, is another option.
The Nexus 7 does not have a memory card slot. It only has internal storage (16 or 32 GB).
You can do so using the Google Cloud Print service. The printer will have to be cloud print compatible however.
Like any Android-powered device, you can store your files both in the internal SD, or in the cloud using Google Drive, Google+ (for photos), or third party providers such as Dropbox, Box, Sugar Sync, SkyDrive, and others.
If we are talking on display size alone, the Nexus 7 is considerably bigger...7.02 inches with the Nexus 7 2013 version vs. 4 inches on the iPod Touch. Most of the Nexus 7's specs (both the 2012 and 2013 editions) are much better thn the iPod Touch, having faster processors, more RAM memory, aformentioned larger display. The exception is storage. The Nexus 7's maximum storage size is 32 gb, while the iPod Touch has 32 and 64 gb available.
There are various types of Nexus devices, but the Nexus 7 is part of that same family.
The 2012 Nexus 7 came out on July 2012. The 2013 Nexus 7 came out on July 2013.
No, it won't. The original Nexus 7 only allowed for micro USB charging or use of a dock to connect to the docking pins.
It should work for the Nexus 7, as it works for newer Android smartphones. As for the iPhone 5, you will need an adaptor to use a HML to HDMI as it doesn't use micro USB.
The 2012 Nexus 7 debuted on July 2012. The 2013 Nexus 7 debuted on July 2013 (August 2013 in Canada).
Yes, the Nexus 7 (2013) is Bluetooth Smart Ready certified. The 2012 Nexus 7 supports traditional Bluetooth.