I don't know where to post this. I apologize

So plz help if you can. Has nothing to do with me and my SO. It has to do with me son. He is 13, and we caught him watching porn. Dios mio. I don't know what to do. Or how I go about this. All I did was disconect the wifi from everything he owes. Ps3, his tablet, his phone. I'm just so shocked right now