Well my first real encounter has not reassured me that not all of them are evil... Anyway, I get my morals from my feelings. As in when I feel bad for doing something, I don't do it. Vice versa with doing something good. Also I try to read books and get the moral lesson from the story. Lastly, I use my logic and reasoning skills to the best of my ability.
"I trust my own reason and my own capacities to think and educate myself and to reach greater levels of knowlege and status through learning and work. To me, wishing for a god is like wishing to be a slave, it is like declaring that one is too incompetent to handle one's own affairs." - the germans are coming