I think I have come up with a product that will make a huge contribution to its particular field. What now?

WHAT SHOULD BE STEP #1 IN GETTING MY BUSINESS OFF THE GROUND? Should i get a patent? A trademark? My buddy's dad is a lawyer, should I go speak to him about it? Make a prototype and try to sell it to a huge company for m production? Make a thousand of my product and sell them myself? How do I get investors? IM JUST SORT OF PARANOID ABOUT SOMEONE BEATING ME TO THE PUNCH, ITS SUCH A SIMPLE IDEA THAT I FEEL I SHOULD TRY TO OWN IT ASAP BEFORE SOMEONE ELSE DOES. ITS A PRODUCT THAT COULD BE SOLD AT PLACES LIKE WAL MART AND REALLY ANYWHERE, PLEASE UNDERSTAND THAT I CANT REALLY GIVE YOU ALOT OF INFO ABOUT IT DUE TO THE CONFIDENTIALITY BETWEEN MY BUSINESS PARTNER AND I. ALSO, IM BROKE.