With a simple USB drive and Tails, you can turn any PC into a secure, Tor-encrypted workstation in seconds.
Otherwise, you have to burn the image to a disk Boot to live disk/USB Now that you created some space for your Ubuntu OS, and have created a media to install it, you can start the installation process ...
Most netbooks do not ship with an optical drive. Here is how you can make your own bootable USB memory stick with Ubuntu Netbook Remix - the special netbook-optimised version of Canonical's Ubuntu ...