Knowing how to operate a camera (and photography equipment in general) is getting lower and lower on the list of obstacles one must overcome to become a successful photographer; just above that is knowing how to take “a pretty picture”.
You want to be a successful photographer beyond the hobbyist level? Study human psychology, art, and marketing. Also, learn how to edit your stuff.
The other thing that helps me–not sure if this is true for everyone–is being able (or least trying) to explain my photographic goals, projects, and scenarios in words.
Visit Michael's Art Photography Portfolio at SaatchiArt.com!