As chronicled in your researcher's journal as I researched my history of early lifestyles in South Asia...
I should mention a book that so far has been very useful. It's written
well and -- what I adore -- very concisely and carefully. It's Gavin
Flood, editor, The Blackwell Companion to Hinduism (Oxford: Blackwell,
2003), written by various scholars. (Of course it includes the important
point that Hinduism is really not one religion nor is it a collection
of sects...) And I would also like to mention that both Blackwell and
Routledge publishers have been very reliable for me so far.
Current time travel apparatus location: New Delhi, India