You should start with Rajasthan see some interesting heritage places .Rajasthan is known for its historical hill forts & palaces, it is claimed as the best place for tourism-related to palaces.Come and witness the Royal Rajasthan
India has everything you just need to name it. From deserts to snowy hills, from beaches to the chaotic city rushes. One must visit Kullu- Manali, Shimla In Himachal Pradesh, Srinagar in Kashmir, Sikkim, and Jaisalmer , Jaipur, Udaipur and other famous and beautiful forts in Rajasthan and Kerala and Goa for the pretty beaches and greenery.
India has so many beautiful places to visit. International border areas like longowala, in Rajsthan,Dawki in Meghalaya,Jai nagar in West Bengal,Bimla in Arunachal Pradesh, Bagha Borderin Punjab Dhanush koti in TamilnaduMore in Manipur etc