Easy? yes, well to be honest at first it takes a few goes to find your way around but then it will open up to a heap of fun. There are a bunch of things to do online, chat, message, online gaming etc etc. I'm Particularly partial to a spot of Battlefield 3 at the moment, its a right laugh and your never to old! Almost all the PS3 titles now have multiplayer options so joining your friends online has never been easier.
If you or anyone wants to add me I'll be happy to give some pointers [8-)]
Heathen that I am, I never got beyond the very first Playstation which I got for a tenner with 2 games about 7 years ago and which has been tucked away in a drawer for about the last 5 years [Sighing]