Hi all, I am new to this and am asking a little advice on equipment i would need to purchase. i really dont want to rent anything. my first question is on regulators. there is so many out there and at a wide variety of pricing. i read a lot of there discriptions and that doesnt really give me a lot of info. i dont want to go out and by an inexpensive one and not feel compfortable with it. any suggestions? also a friend of mine told me to get a spare air bottle instead of an octo. now my classes dont start for over a month so i have no idea what the heck an octo is. and last i hate being cold so what type of wet suit should i purchase. i live in So Cali and plan to dive out here for the most part.