Plastic Bishop is a good site for beginners. I had some correspondence with the site’s owner, a fellow named “Ste” and he seems to be a pretty good guy who mostly runs the site for the love of it more than the money. Based on some of the questions I saw in the forums I doubt their highest rated players a much above 1600 or so.
As well as being able to play in standard games you can also join tournaments or multi-game matches. Tournaments can be set up to only allow players of a certain skill level to join, or you can allow anyone join.
If you choose to become a subscribed member you will be able to create teams and invite other members to join you. As a team, with up to ten members, you can play games against other members or against other teams
Site subscriptions are for about $12-13 per year. This gives you access to everything the site has to offer and all proceeds support its continued growth. Actually, “everything” doesn’t include much though. If you don't want to subscribe then you can use the site free with no advertising, but you will be limited to having a maximum of 10 games at once and some other features will be limited or unavailable.
Ratings start out at 1000. My record there was +14 -0 =0, including this gem against a 1300: 1.g4 d5 2.Bg2 Bxg4 3.c4 Be6 4.Qb3 dxc4 5.Qxb7 1-0 See what I mean about it being a good beginners site?!