How do I buy a new car

[kayanat]

How do I buy a new car from a dealership? I actually bought a new car back in Nov. '02. Mits. Lancer '03. Well, I regret that. I got totally ripped off. I am still paying for that car plus I have a balloon payment (the interest) coming up in Nov. '07. I know I'm going to be needing a new car soon. I am giving myself some extra time before I buy so I can make the right decision. I narrowed my choices to 2 cars: MINI Cooper/ Toyota Matrix. I ask: How can I haggle prices down? How can I find out what are the taxes in my area? How can get a great loan with my bank? I think I have excellent or almost excellent credit. What advice can you guys give me? (The reason why I'm getting a new car is because my boyfriend is going to be using my Mits. He had to sell his car when we moved. We are both young and need some wise advice.