I'd suggest you to start by taking a look at the Intel® Edison Bluetooth* User Guide, in that document you will find a lot of useful information that will definitely help you.
Now, what kind of data do you want to send? Do you want to transfer files or do you need a serial communication?
Either way, you can use the FTP profile for file transfers and SPP for a virtual serial port communication. You'll find information about both profiles on sections 6.13 and 6.7 of the Intel® Edison Bluetooth* User Guide respectively.
If you want to connect more than two devices at once, I'd suggest you to use the PAN profile, you can find more information about this profile on section 6.6 of the Intel® Edison Bluetooth* User Guide.