If your Netbook will boot from a thumb drive this is a good was to learn Linux. You can download the program below and load many different version of Linux on a thumb drive. This will allow you to try out the different version and pick one if you like it. Read the page from top to bottom so you have a good understanding of what your getting into. Linux is a fun OS but it is a geeks OS.
http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
I keep several Linux programs on a thumb drive for booting systems to
retrieve data from crashed OS and to test the rest of the puter. I myself perfer Fedora. Keep on mine that Linux is very geek oriented. On a geek scale of 1 to 10 and you find MS Windows to be a 3 Linux will be a 8.
Well I have a few questions about ubuntu actually. How do I install Ubuntu on my 2yr old Eee PC? How much space does it take up? What things can you do in Windows that you can't in Ubuntu? What things can you do in Ubuntu that you can't do in Windows? Does Ubuntu improve system performance and how? Will I run into any problems when installing/using Ubuntu?

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