Something I forgot to mention is that photographing people is easy to accomplish if you know the person because you can take as long as you want withouth bothering him/her. The real goal is to photograph strangers. If they know you are photographing them, first you need to gain their trust and respect and then you can take the pictures. If they do not know you are taking pictures of them and then they find out, they probably will not like that. So you have to learn to avoid further arguements and be able to accomplish such goal