Steer clear of Google Chrome if you value your privacy. They've just introduced a misleadingly labeled "privacy sandbox" feature, which, paradoxically, undermines user privacy rather than protecting it.
Another video concerning online tracking and all the data about you constantly being hoovered up. This one takes a good look at the difference between privacy and security.
A great explanation of real time bidding and how your personal information does get shared by google (and many others) with thousands of third-parties, some in China and Russia. Whatever sneaky language they use to reassure you, this is the reality of the online advertising world.
If you haven't seen it yet, this segment from John Oliver about data brokers is worth a watch, particularly the magnificent ending.
Because they aren't creepy enough, Facebook have been found to be using the accelerometer on iPhones to track all their owners' movements. Just delete your account.
Fawkes is a piece of software that modifies your photos in a non-visible way to stop facial recognition models from indexing them and associating them with you. Basically poisoning the machine-learning well.