I pretty you don't have to tell them anything about your list until you have to, but how far does or dhould this go? I don't want to be stingy, but I don't want to gorge them on all my list and it's contents
You don't have to tell them anything, although some consider it poor sportsmanship not to do so. Personally, I prefer not being told anything about my opponent's list, it adds to the challenge.
How does general gaming go? Do people usually get mad if you make mistakes? I don't want to piss somebody off too bad. I'm not parinoid, I just don't want to be rude.
Again, it varies from person to person. If you made a mistake playing me, I'd correct you, and move on with the game. However, there are always some people who'll think you're trying to cheat, or something stupid like that. My advice is, if someone overreacts when you make a mistake, they're probably not worth playing again. Remember, everyone makes mistakes. I've been playing for a good seven years, and I still make mistakes, it happens.