I love Ubuntu, This
operating system is for the people by the people and of the people
(just like the great Democracy :) ). It does not hang like windows
also it is virus free. It has graphical user interface unlike
traditional Linux, above all it is free for the masses!!
Below is the process how you can turn your pendrive (or USB drive) into bootable one and install Ubuntu.
Prerequisite:
- USB Drive: Having 2 GB+ memory & FAT formatted.
- Ubuntu ISO file: Latest ubuntu version can be downloaded from http://www.ubuntu.com/download/desktop At the time of writing this blog latest long term support version is 12.04 LTS.
- Unviersal USB Installer: This software can be installed from http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3

Press create, after few minutes installation will be over and your normal USB drive will turn into bootable USB drive.
Installing Ubuntu :
Insert USB drive,
Start your system & press F12 , Select USB storage device as
desired boot device and start installing. Happy installing!!
Drop message for any further guidance(kaustuv.kunal@gmail.com).