I want old Ubuntu 11 look for my Ubuntu 14.04. How can I set up that look?

I want old Ubuntu 11 look for my Ubuntu 14.04. How can I set up that look?

Gnome 2 is dead, long live Gnome 2.
Mate is a fork of Gnome 2 and Ubuntu Mate starting at 15.04 is officialy part of the Ubuntu family.
You can download Ubuntu Mate from: https://ubuntu-mate.org/

To install Mate in Ubuntu 14.04:
Instructions from the official wiki
The Ubuntu MATE Developers utilize a MATE 1.8.1 PPA Repo ported from Debian for use with the Trusty (14.04) Ubuntu MATE Remix. Add Repository
You may add this repo to your apt sources via the following commands:
sudo apt-add-repository ppa:ubuntu-mate-dev/ppa
sudo apt-add-repository ppa:ubuntu-mate-dev/trusty-mate
Install MATE 1.8.1
First make sure your package list and packages are up-to-date by running:
sudo apt-get update
sudo apt-get upgrade
You can choose to install Vanilla MATE by picking one of the apt-get options below.
This will install the base packages required for a minimal MATE desktop
sudo apt-get install mate-desktop-environment-core
This will install the complete MATE desktop
sudo apt-get install mate-desktop-environment
This will install the complete MATE desktop including a few extras (Most Users Will Want This)
sudo apt-get install mate-desktop-environment-extras
Ubuntu MATE
Alternatively you may choose to install Ubuntu MATE.
Ubuntu MATE is a more comprehensive option that offers a slightly tweaked layout, configuration, and themes to integrate into Ubuntu in a more seamless fashion. This will install the complete MATE Desktop Environment as well as LightDM and numerous other applications to provide a full and well rounded desktop.
sudo apt-get install ubuntu-mate-core ubuntu-mate-desktop
You can remove your current desktop and install mate-desktop.
If that's what you want to do.
Switch on your computer.
Press and hold the Shift key, which will bring up the Grub menu.
Select the line which starts with --- Advanced options.
Select the line ending with --- recovery mode .
Your PC should display a menu with a number of options.
Select network --- root or netroot.
In a terminal run:
# mount -o remount, rw /
# mount --all
# apt-add-repository ppa:ubuntu-mate-dev/ppa
# apt-add-repository ppa:ubuntu-mate-dev/trusty-mate
# apt-get update
# apt-get dist-upgrade
# apt-get install --reinstall aptitude deborphan ubuntu-mate-core ubuntu-mate-desktop
# aptitude remove '?and(?reverse-depends(gnome),?not(?reverse-depends(?exact-name(ubuntu-mate-desktop))))'
# aptitude remove '?and(?reverse-depends(unity),?not(?reverse-depends(?exact-name(ubuntu-mate-desktop))))'
# apt-get install --reinstall ubuntu-mate-core ubuntu-mate-desktop
# deborphan
# apt-get --purge remove $(deborphan)
# deborphan --libdevel
# apt-get --purge remove $(deborphan --libdevel)
# deborphan --find-config
# dpkg --purge $(deborphan --find-config)
# apt-get autoremove
# apt-get clean
# reboot
If your meaning of like 11 is: not this terrible unity thing, then you have a choice of many desktops. Gnu/Linux has many desktops, there are just programs, not OS versions.
All you have to do is install a different desktop. There is KDE, Gnome, xfce, lxde, 9wm, aewm, afterstep, awesome, blackbox, ctwm, dwm, flwm, fvwm …
Then select it before login.
Try some out.
Most of these will be part of Ubuntu, no need for PPAs.