How to install tor in ubuntu:
What is Tor?
Tor is free software and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.
Why Anonymity Matters?
Tor protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, and it prevents the sites you visit from learning your physical location.
For more information visit torproject.
How to setup tor:
$tar xf tor-browser-linux64-4.0.4_en-US.tar.xz