What's new in 12.04 LTS:
The Head-Up Display (HUD)
The new HUD gives you a fast alternative to the traditional, menu-based way of telling your computer what to do. Instead of clicking on menu items to give it instructions, you just press one key to bring up the HUD and start typing what you want to do. You’ll then get a list of functions, without ever needing to know in which menu they live.
The Video Lens
The new Video Lens makes it easier than ever to find the videos you want to watch. Just click on the icon on the Dash and enter your text to search. Whether it’s stored on your computer, on YouTube or anywhere else, you’ll soon see a list of matching content.
Ubuntu Software Centre
The Ubuntu Software Centre gives you instant access to thousands of apps. You can see the top-rated apps, compare apps by rating and user reviews, keep track of what you've installed, and sync your apps between all your Ubuntu computers.
Super-fast, easy to use and free, the Ubuntu operating system powers millions of desktops, netbooks and servers around the world. Ubuntu does everything you need it to. It'll work with your existing PC files, printers, cameras and MP3 players. And it comes with thousands of free apps.
The desktop CD allows you to try Ubuntu without changing your computer at all, and at your option to install it permanently later. This type of CD is what most people will want to use. You will need at least 256MB of RAM to install from this CD.
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.