[mothered]

Use a VPN, try using Tails either in a VM or a USB, don't watch any videos that use flash or java, disable javascript and don't download anything. Also, change the slider in the Security Settings to "Safest".

Edit - If you use the "Safest" setting, some images and text might not appear.

And If you're using a laptop, don't forget to tape over It's built-In webcam.

In fact, this should be done regardless of your online habits.