Hello! So, I've been researching for awhile now about getting a betta, which is how I stumbled upon this site. After lots of research, I believe I'm closing in on getting one

! I feel decently prepared, but the one thing I'm not too sure about is how exactly you change the water.
I've tried looking around, but even in books i can't seem to find good step-by-step insructions on changing water. I'm not sure if I'm looking in the wrong place, or what!
It would be AWESOME if you could (A) Send me a link with a good step-by-step set of instructions, or (B) were to post them here.
If you are going to do either of these things, please include how often to change the water (I'm getting a 5 gallon tank), what I will need (and if you can, how much it will cost), and of course how to do so. Again, I would love it if you could!
I thank anyone who will take the time to do this, because I'm probably just being an idiot and not looking in the right places, but, then again, I want my new pet to be as happy as possible! So thanks, and please post!