If you are using Firefox as your default browser, then the following settings are recommended for users who are concerned about their privacy online.
The three major plugins that are used are: Ghostery, Adblock, and HTTPS-Everywhere. If you prefer an alternate to Ghostey, then I would recommend Privacy Badger from the EFF. Also, users should make sure to pay attention to the specific settings inside their browser to prevent data from being transmitted in the background.
