This is a traditional icon-based environment you control with your mouse and keyboard.
A Firefox window will automatically open with instructions to configure your printer and launch the paper wallet generator. If this is a fairly common printer, Ubuntu may allow you to start printing without any further configuration.
Once mounted, an ISO is no different than the real thing, in this case.
Click the green "open generate-wallet.html" button in the Firefox window, and then generate and print all the paper wallets you need.Tip: To shut down/reboot, look for a 'gear' icon in the upper-right corner.After a few moments, you should be given a choice to boot to your usual OS X environment or the DVD (which may erroneously be described as "Windows".) If you are using Windows, please visit this page which includes some tips on tweaking your BIOS.This is especially important when using Windows 8, as the UEFI setup may need to be adjusted: https://help.ubuntu.com/community/Boot From CD It can take a very long time (5 minutes) for your computer to finish booting from the DVD. Your screen may display some strange garbage during the process.Well, you can always upgrade using a CD/DVD ISO image.
If you have access to faster more reliable connections like from a library or school, download the image from Ubuntu site and burn it onto a CD/DVD.
You can find all the relevant instructions on how to perform the upgrade on the official ubuntu site.
Of course you do not need to burn the actual CD or DVD.
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Then when you get home use it to upgrade your system.