Anyone ever pitch a venture captial firm?

[damcv62]

I got invited out to pitch a start up I've been working on, a first for me. Friend of a friend found out about the idea, asked me to come meet out on Sand Hill(guess this is a well known tech investor area?) I know my product, I know the idea has value(based on a buy out offer from a shark tank type group, but I want to build this, even if the offer made me think long and hard about it).

I guess does anyone have any pointers? Suggestions? Lots of smart people on here, I'd appreciate any insight you might have. I'm not going to get into the exact idea on an open forum, but I do have a couple of patents related to the idea and some other things in the works.