This post like all of my posts are several years out of date.
Use the Tor Browser, or a VPN preferably a paid one.
You can also use a browser like Librewolf that is a bit more hardened than Firefox or Chrome.
If you are really worried about privacy there are a few things you can do including:
Use the Adblock Plus extension for Firefox and use the
Easy Privacy list as well as the
Antisocial list.
This list blocks the ever increasing social networking content...