NO Magadha? That was an ancient region that was the source of many Empires, including the Mauryan Empire. At this time there would have been the Nanda Dynasty that ruled for a short amount of time before the Mauryan Empire. Yes there are few sources on the time, but even greek/roman sources add mythological stuff to their data. It is modern historians job to try to find out what really happend and what was made up. Magadha definatly existed from every resouce i have seen.

As for joining, just post at our forum, link given at top. Just post stuff in the main Indian forum(which actually only has one thread, and if you add good content i will add you to the team.