login with facebook in cake php site

We got a penny website and want option to have users logged in, and show avatar from facebook account, but also other information which is need for creating a normal account.. Also want all auction submitted to twitter with use of api. like mr x just bid on auction bla bla miss x won auction bla bla, So bssically all actions done which wuill be inserted in database must sdsent to twiiter and or facebook page.