Like they say: re-search. Keep on searching again and again.  I would like to make life easy for you. If you do not have time to read all the scriptures than just read the Qur'an. The final book that came from same GOD of Krishna, Buddha, Moses, Jesus.

It was revealed to a illiterate person: prophet Muhammad (s.a.w.)
http://www.history.com/videos/who-was-muhammad#who-was-muhammad
 
The Qur'an is awesome book which changed my life.

You may read at: http://quran.com/

It's a matter of salvation my dear brothers and sisters. Please read it before it's too late.

Have a beautiful day!
Peace be with you!