Ok, I found this page, it has all the major types of tea, with the characters. It doesn't have pinyin, but if you use firefox, look for the application called perapera-kun. I don't know if you have heard of it, but if you haven't, once it's activated you can put your mouse over characters and it will give you the pinyin as well as the translation.

As for types I have tried, green tea is a given, I'm sure you already know all about that one. The only kind I know the name of is Dragonwell, which is supposed to be the best, but I thought it tasted like grass. Oolong is halfway between green tea and black tea. I like that one the most because it gives a sort of refreshing feel, and I personally find it to be the most pleasant out of the teas I have tried unsweetened. I've had Jasmine flavored tea. I can't say it tasted very different, I think it is more about how it smells, since I think they brew the actual flowers. I also had some kind of black tea that I can't remember the name of, but I think black tea is the worst unsweetened.

Sorry I can't help more, I'm not a big tea drinker.