Facebook application help

Need help about Facebook application.

[geniuscapri]

Hi,
i am a php developer. But not using from 2 year so i dont know much updates related php.
now i want to work on facebook application. But i dont know how to start it.
please give me some help how i start it.

Thanks in advance :)

[omoutop]

You can start reading here: [developers.facebook.com...]

Although, he guys at [webmasterworld.com...] can provide you with much more info