Job leads in your social circle
Most people who are looking for jobs usually get their leads from the classified ads. This could either be in traditional form, e.g. newspapers or trade magazines, or it could be in electronic media, specifically, web sites.
But there is also another effective avenue for getting information on job openings – your own social circle. It is most likely that your friends are already working in the same general field as you are. They will be in the best position to know information about any new job openings in your field. They can even give their recommendations and suggest you as a possible job candidate.