any good reference for probability (not just intro but i need deeper concepts plz)?

Question

i am an engg student , give your best as soon as possible

Answer 1

Some tutorials and references:
http://www.mathsyear2000.org/alevel/pure/purtutpro.htm
http://www.mathgoodies.com/lessons/vol6/intro_probability.html

Non-math oriented precis:
http://www.strevens.org/research/overview.html

Answer 2

Go to your engineering library. There's tons of textbooks and reference books written on this subject.