Hi David,
here you can find some stuff about American English. Vowels, consonants, lots of stuff...
[link]On that website there's also a link to this page, where the states are pronounced.
[link]If you need to know how to pronounce a word in American English (names of states and countries included), you can look it up on Merriam Webster online. You can also listen to the audio clips on this dictionary.
[link]If you want to know more about American English (most important pronunciation features), you can check out this website. It's American Accent Training. There's some free stuff. If you can get that course somehow... it's useful. Check it out:
[link]![Smile [:)]](/emoticons/emotion-1.gif)