We have a good number of printed maps of South Asia, esp. India, in our collection. Some of them are street and guide maps for major cities or destinations like parks, temples, and pilgrimage sites. Others are large-scale flat maps for the entire nation of India, individual states, or regions; many of them are thematic, with information organized by categories like industries, environment, population, religion.
For historical maps, search DiscoverE for the subject "India - Historical geography - Maps."
We have a few CD's as well with digital maps. The Emory Center for Digital Scholarship supports GIS software if you want to manipulate digital materials.
Google Earth was never given access to Government of India data so its usefulness for South Asian studies has been somewhat impaired. Google Earth can still be valuable esp. for all the information uploaded by users. The Indian government's system, Bhuvan, was released in August 2009 and offered many of the same functionality as Google Earth but with emphasis on the subcontinent and with some government data built in -- e.g., political boundaries down to the district, town and village level.