The website about Ubuntu - on of the most user-friendly Linux distributions. You can download an ISO image and burn it on a CD, or, if your Internet connections is slow, buy Ubuntu CD or request a free CD (with no shipping costs!).
Ubuntu can be used as a primary OS or along with Windows. Thanks to Wubi it can be installed and removed like normal Windows application.
You can try Ubuntu without actually installing it - just boot it from a CD. Windows users, try Ubuntu out and you will see how great operating system Linux is! And it's free - you can give a copy to your friends and install it on as many computers as you want, with no license fees or legal consequences!
Oh, there is also a netbook edition of Ubuntu.
Brilliant website, helping to provide open source software and Ubuntu to everyone, also buying items from their store is very safe, personally checked. Ubuntu is also helping the world and climate change too, use a CD as many times as you want, meaning you don't have to create brand new CD's for every new computer you install it on.