Getting a fish!

I am so exited I am going to get a fish. I am going to get a Betta, hopefully a crown tail cause they are so pretty. I have a 3 gallon tank sitting on my dresser. I just need to test the water, and get whatver I need to lower whatever is in the water, if I am lucky I won't have to touch it. I know that wont happen though. So it may be another 2 weeks till I get my fish DX
So I went to this pet store near us to get the water tested. The lady I talked to a couple days before told me I could bring it in before I got the fish. I talked to a different lady, and she told me to buy a test fish and if it died to bring it in get my money back and then they would test my water! I was so mad there is no way I would kill a poor innocent fish on purpose. And then I was just thinking why would I buy a fish I really liked just to possibly see it die a couple days later, or if I got a fish I didn't like all that much and nothing happens and then I am stuck with it. So I am going to go buy a test kit, probably on Tuesday and if any of you who run across this own a fish and have a test kit you know how much they are. DX I just wanted a fish! Who knew it took so much to care for them? But if my mom would just take me to the store a bit more I might be a little closer. Oh well all in good time I suppose.