Watched this series on Amazon Prime and was hooked after the first episode. I watched 5 episodes back to back in fact as it's so good. The strength of the writing, the characters and the acting is all top notch. Quite simply the best TV series I've seen in years. I cannot recommend it highly enough and the fact the second series has been picked up by a mainstream network is of no surprise.
I won't say anything about the plot as it'll spoil the enjoyment. Simply get it if you've any interest in our modern world and how we live in our social media infested world.