Hindu sacred texts

Hey, fellow Indians.  I recently had an urge to explore some of the 
Hindu literature, and finished Ann Stanford's translation of the
Bhagavad Gita which I thought was really good.  I recently am reading
some of The Upanishads which, though less poetic, seem to relay the
same teachings.  Mostly I am fascinated by the similar themes present
in Buddhist texts and in the Guru Granth Sahib of my religion, Sikhism.

I was just curious as to what goes on in Hindu temples and what significance
texts (like the Vedas) hold today for Hindus in daily life.  Are people of
other faiths allowed in these temples, too? 

Feel free to post here or e-mail me.  Thanks.

Harry Dhillon
Los Angeles, CA
Kendall Park, NJ (sometimes)