Read and learn. This is seriously important work. Sociology was the first subject I really studied, and Ron Burt is one of the few guys still really pushing this field in new directions.
If you haven't read Coleman (James), go read him first. If you haven't read Weber and Durkheim, go read them first. Then you can critically think about guys like Duncan Watts, whom I'm sure most of you have heard of and thought was pretty cool.