Please come to India prepared for everything and expect the unexpected!!!...India is a country with billion plus population, so things will be rosy as well as nasty...come prepared!!! - I have traveled extensively in Europe and very well aware how things are in Europe and in my home country, once when you are adjusted to the way of Indian life then you will enjoy your stay...My humble advice don't go for cheep hotels and travel plan, all the major cities are connected by air and most of your air tickets will cost you from $60 to $150 economy class, if you planned to travel by Train go in the best , example Mumbai - Delhi go by Rajdhani Express, which is fully Air Conditioned train with affordable price and is well maintained, and fare of Economy Class Rs.1495 ($28), 1st class Rs.2,185 ($40), Business Class - Rs.3,730 (68$) (all three time meal provided free) - also the distance traveled will be KM.1392 - in 16 hours you will reach Delhi form Mumbai.
Choosing your accommodation also go for decent hotels in the range of $50 to $100 per day, if you have big budget then you can go for 5 star hotels. Now there are many budget hotels with good accommodations such us the TATA group run Ginger Hotels there you will get good rooms at a price in the range of $20 to $40.
Best Budget Hotels in India | Economy Hotels India | Ginger Hotels
Also please watch the below video from
2.45 seconds and you can hear it from a westerner how things and life are going to be in India...