Are you on LinkedIn? It can be a useful tool - first connect with people that you actually know (personally, professionally), search for organizations that you are interested in and "follow" them, and then search the connections of your connections to find people that may be helpful to know or that work at the organizations you are interested in becoming familiar with. Send them messages asking for a coffee meet-up to learn more about X company or Y field they're in. This is more commonly done on LinkedIn than you might realize. Since you said your goal was networking I'm assuming you would know not to meet those people to ask them to hook you up with a job, but to meet them in an informational capacity so that later when the time is right you can re-connect.