Another very popular and economical destination for backpackers, besides being the experience of a lifetime. the trip, the lodging and the food is very cheap in comparison with other backpacking destinations in the world. there are many hostels for backpackers, in most of the cities, which are incredible places to meet and make many friends. You will not have air conditioners or hot water baths, but culturally, the food and the monuments that are worthwhile. Many people avoid going to India because it is a dangerous place, but it is an incredible place.
Are you looking for a destination with tropical nature and Asian culture? take a trip to nepal. Enjoy Asian monuments while trekking through a little developed country. Visit Bhaktapur, in Kartmandu to see Buddhist temples. One month is not enough to see everything. the lodging and the food are cheap, so you do not have to worry about it.
if you can not afford to travel to Greece or Italy, Albania is a great alternative. It is one of the poorest countries in Europe, it is a beautiful place with a lot of history. Tirana, its capital, has many museums and incredible historical sites. you can go hiking in monte dajt and have an incredible view, or enjoy the sun on one of its incredible beaches. Equally the two beaches are incredible.