India travel tips (Zurich)

Hi there,

I gonna be in Hyderabad, India, at the beginning of next year and I have been told it would be quite cheap to travel around by plane. Any tip, kind of must see while I am there? Kalkutta, Mumbai, Goa? It would be for Protected content and I am looking forward to discover the country, culture and traditions over there. Can anybody give me any tip, maybe also about Hyderabad and its region?

Thanks a lot,

Cheers, Marie-Aude