1. I am trying to install Tor with the following commands (following this tutorial):
$ sudo gedit /etc/apt/sources.list
$ gpg --keyserver keys.gnupg.net --recv 886DDD89
$ gpg --export A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89 | sudo apt-key add -
$ sudo apt-get update
$ sudo apt-get install tor tor-geoipdb
2. I have to install Polipo: $ sudo apt-get install polipo
3. Installed Torbutton.
4. Modify config file. Restart polipo: sudo /etc/init.d/polipo restart
