Internet Indian History Sourcebook (Fordham Univ.) 
Hindu History--A Search for Our Past --> an entire book (written is language easy to understand) by Sidheer Burodkar on India's history in small, readable chapters with graphics and primary source document excerpts.  
The Geography of India  (1995 CIA World Fact Book)
World Civilizations:  Ancient India 
Harappa
Ancient Indus Civilizations:  Harappa and Mohenjo-Daro
Ancient India:  The Aryans
Around the Indus Valley in 90 Slides
Ancient India (school web page--good overview, esp. on culture and religion)
Ancient History of the Indian Subcontinent Through 322 B. C. E.
Alexander the Great in India
Timeline of Ancient Indian History
India's History Through Her Coins (RBI Monetary Museum)
Online Sanskrit Dictionary --> type in an English word and see the Sanskrit equivalent.
The Ramayana
Exploring Ancient World Cultures:  India --> links to the Bhagavad Gita and other Indian religious works.
Hindi/Urdu Language Lessons Page (Syracuse Univ.)
How to Wrap a Sari
Cooking for the Gods (Newark Museum & Univ. of PA joint exhibit) --> pictures of the utensils used in Hindu religious rituals for home worship.
The Great King Ashoka
India:  Languages & Scripts
HinduNet:  The Hindu Universe --> a huge set of religious and cultural links on Hinduism and the other major religions of the Indian subcontinent.
Hinduism in America (Brown Univ. Student Project)
Women in Hinduism
An Introduction to Buddhism
DharmaNet:  Huge Gateway to Buddhist Web Links
Jainism:  Jain Principles, Traditions and Practices