Former Facebook Product Manager Documents a Month Spent in Syria

The YPJ, and the male YPG, have facebook and twitter accounts, and also have some webpages.

They're either a branch of PKK (a terrorist organisation), or they are loosely affiliated with PKK and share similar aims.

It's interesting to read the comments on twitter and facebook from English and US citizens saying they want to join YPJ/YPG, and getting advice on getting through Turkey.