Avoid the friend, neighbor or co-worker who works in computers, science or engineering and always talks about cameras. These people's passion is usually just for the cameras or computers themselves, not about photography itself or art or expressing their imagination visually. Watch out for people who prefer to talk about tools instead of actually making photos. There are thousands of people who watch sports on TV and can talk endlessly about sports stats for every one athlete who actually plays professional sports. You want to talk to the rare guy who actually does it.
Ken Rockwell