One of my laptops runs under Ubuntu.

It is good though it takes a bit of getting used to - the bonuses are that it is robust (I have never had a BSOD with it) and is essentially malware-free.

Both Chrome and Firefox are available in Linux dialects, as is Thunderbird (my e-mail client).

OpenOffice (word-processing, etc) is also available for Linux dialects.

I am not sure about Facebook - you might have to check this out.