History is one such subject where biases are seen in plenty as the ruler of the contemporary era tries to write it according to their own wishes and only a few exceptional historians dare to defy andpresent the real scenarios, we can see thepresent situation where daily we are seeing the war of words earlier for Gandhi and now for Ambedkar. Arun Shouries book also ignited the debate on this, OK leaving that behind I think Wikipedia is good source for Indian History so you can look at this http://en.wikipedia.org/wiki/History_of_India
but todays Site of The Day is :

http://www.fordham.edu/halsall/India/indiasbook.html

although one can also look at :
http://www.indhistory.com/
http://www.lib.berkeley.edu/SSEAL/SouthAsia/sahist_indiahome.html