As I mentioned before, I have a blind classmate. I've never been around a blind person before, so this has been a real learning experience for me. I'd like to share some of the things I've learned, which I am fairly certain apply to all blind people and not just to my new friend.
~ Big open spaces can be bad for them, because they lose their bearing. They need some reference -- even just a curb that they can find -- to know where they are. And it's best if they don't have to walk through open space to find that reference place.
~ If a blind person is lost, go rescue them. This is something my blind classmate has really emphasized when we're talking about blindness. Also, some blind people panic get even a foot away from their path.
~ Blind people have to learn to face people they talk to. So if you're talking to a blind person but they aren't facing you, don't take it personally. Sometimes they'll even face completely away from you. I'm not sure how many blind people do this (my classmate doesn't) but apparently enough do that it's worth mentioning.
~ If you're leading a blind person somewhere, tell them if you're coming up on stairs or anything else like that. They really need to know that kind of thing.
I'll probably share more tidbits here and there. It seems to me that knowing basic things like these about blindness is good, even if you don't see blind people on a regular basis.