Bluetooth Handsfree

Hello there,

Is there any links that i mat obtain the internal circuitry of a bluetooth handsfree? I am currently working on a bluetooth project, and I need to connect the Bluetooth USB adapter onto a controlling circuit, where i can control electrical appliances to on and off. But i do not know how am i going to do that. So i have to refer to a handsfree circuit to get some idea out of it.

Can anyone here kindly suggest any better idea on this?

thanks and i am sorry if my question sounds stupid as i am new in electronics.

Thanks