Nitrous?

[69halfton]

just a little confusion.

Im 16 years old, and am looking for a little more kick out of my 383 stroker.

of course, im on a budget like many guys here, but as you could geuss mine is a bit smaller then most of you guys.

My motor has a fresh rebuild, with all forged internals, and its a 4 bolt main.
Im sorta thinking about doing a nitrous fogger setup.

my questions are: obviously nitrous is basically pure oxygen, so do you not have to add more fuel to the mix when running with the nitrous? I dont want to have to re-jet the carb to go racing everytime.

I dont know much about the Nitrous, but once installed, how much does it cost to buy more, and where do i get it>?

...sorry, i feel like quite the rookie.