Red hat linux is the best to learn and use if you want a stable operating system.
Linux Security Tool Distribution (STD) is really good.
Get the Ubuntu (linux) version. If you install ubuntu it comes with it.
Try Beginning Photoshop for Digital Photographers.
Cubase is better for the beginner. ProTools is not considered a "home" recording solutions. Try the simpler version of Cubase, Cubase Essentials.
Linux.
I'm assuming you are referring the Linux operating system. Linux is 100% free. If you pay a penny for it, get your money back. There are hundreds of different distributions of Linux. Some of the best beginner distro's are Ubuntu and Linux Mint. Check the related links below.
The newest one. As of February 2009, that would be Sabayon 4.0.
It depends on what you plan to use it for.Right in this moment it is 2.6.33-rc8-git7
instead of windows you can have linux or mac. they are different, but you will know whats best for you when you try them, linux is free to download.but you need an operating system (windows, mac, linux or any other OS) for the computer to work
The best known as a LiveCD (as opposed to being the most popular with a LiveCD available) is Knoppix.
Linux (ubuntu 10.10 and higher) and mac OS x (newest version) because they're the fastest best looking and simplest.
Linux does not need antiviruses. It doesn't as much as windows, but it is possible for you get a virus on this system. Avast has a version for Ubuntu and its branches of distros. http://www.avast.com/linux-home-edition