The following tutorial presumes you understand what a LAMP Server is, how to work a website from the back end and how to install software using either the Software Centre or the Terminal. It also expect experience running other Basic Terminal Commands.
Grub 2 typically gets overridden when you install Windows or another Operating System. To make Ubuntu control the boot process, you need Reinstall (Repair/Restore) Grub using a Ubuntu Live CD.
Linux Kernel 3.10 is the most recent LTS kernel release, with 18 releases to date. With a plethora of fixes for literally thousands of bugs, the latest updates stress stable network connectivity.