Facebook can be a rewarding experience in many ways but it’s important to be careful of your privacy. Facebook has written a very simple guide on protecting your privacy on facebook. But remember facebook is all about sharing and connecting and ultimately that is what they want to do.
So please see this straightforward guide on keeping your privacy on facebook.
Not only are there concerns on how private data is from other users there is also the question on how Facebook uses our information
See this guide from Facebook on how it uses our data
But here are some alternative views on how Facebook uses our data in particular with reference to EU concerns.
The BBC wrote this article on how facebook has been accussed of breaching users privacy in 2015
And here is another article from the Guardian on claims of facebook breaching privacy.