You can resize partition in Ubuntu using Gparted if you need more disk space for an existing partition which is running out of space.You can shrink ,e[……]
This brief tutorial will show you how to reinstall a package using apt-get in command line in Ubuntu.
Below content are from apt-get man page
If you also want to install ubuntu yourself,hope this guide can help you.Below is a detail step by step guide show you how to install ubuntu using ubu[……]
Below steps will show you how to create ubuntu usb stick on windows with which you can install ubuntu from this usb stick