It’s a constant battle, but this article by Sean Bonner (Encryption and Privacy – What I’m Using) is a great rundown of tools you should consider in making your Internet use more private and less exploitable.
He covers a wide range of tools, from Tor to VPNs to duckduckgo, and more. Better still, his article is readable and understandable by people who lives revolve around something other than computers.
When it comes to security, you are always making trade-offs between being more secure and other things you want from technology (e.g. ease of use). That said, try and make your computer as secure as you can: every bit helps.