Yes, you can already do that... I have windows 8, but i have been experiencing alot of driver issues. I would definitively wait for the public version to come out. It will probably come out this Fall.
it comes automatically as an update in windows 7 if it is available. Use windows update to install it automatically
Windows 8.1 can be downloaded and installed on a Windows 7 PC, but Windows 8.1 is not an update it is a new operating system. This new operating system can be bought from Microsoft for $119.99.
Windows Update.
Yes, Windows 7 comes with Windows Firewall in the OS itself.
You cannot, but you don't have to mind it as Windows 8 automatically comes up if you don't choose Windows 7 in 30 secs in start up. It's useful cause you can always come back to it.
It can be regarded as both. It is an update on Windows 8.0 and could be seen as an upgrade on Windows 7 or older systems.
Via Windows update
the windows anytime upgrade tool
It means the computer comes with Windows 7.
If you have windows 7 you can upgrade to it. If you have windows XP you will need to do a complete install.
connect your PC to the internet so that windows 7 can update
Windows Touch is only available in the Home Premium, Professional, and Ultimate editions of Windows 7.