SoCal welders! Question!

[DarkoNova]

I'm looking to buy a welder within the month, but I don't know how the gas situation works. I've been told that you don't actually buy the tank, you just rent it? Is that right? Where would I go to get a tank? I'm in San Bernardino, right around Cal State San Bernardino. Are there any places in the San Bernardino or Fontana area that I can go pick up a tank and get it filled?

And where do you guys get your metal?

Thanks guys!