How does home propane delivery work?

I just moved to Pennsylvania and need a little help setting up my propane service. How does propane delivery work. Can I buy my own tank? Do I have to rent one? Which tank should I get if I decide to buy one? How much does it cost for propane delivery? etc. I will use the propane for cooking purposes only (stove, double oven) I cook at least once a day and use the oven once in a while.