That’s a good plan. There are a lot of helpful books on networking, as well.
The point of networking is not to randomly develop relationships with people based on a ten minute conversation. It’s more about discovering and strengthening the networks you already have.
For example, a good place to start is finding common ground. Let’s say you meet Guy from Firm Company. You talk a bit, and find out that he used to work at Organization Work. Your good friend Bonnie is at Organization Work. So then when you go home, you mention to Bonnie that you met Guy. She gives you the run down on him. Now you are golden. If you are looking for a job at Firm Company at some point in the future, you can give Guy a call and ask him for the low-down.
If you are talking with someone who is further along in their career, networking is a good time to learn about their career progression and what sorts of jobs will lead to the sorts of jobs you’d like to learn. You can also learn a lot about the general climate of the industry, what it’s like working for various organizations, etc.
Another thing to do is learn about people’s niches. For example, if you meet someone who specializes in parrot training, that’s a good thing to know- maybe one day you or someone you know will need a parrot trainer, and now you know one. Likewise, if I am a professional unicyclist, I’ll mention that to people just in case they ever find their company is in need of a unicyclist. The assumption here is that if you are so into a specialization, chances are you are pretty good at it. Nobody becomes am expert on parrot psychology unless they are really in to parrot psychology.
Networking is also a good way to increase the number of people who owe you favors by giving you a chance to connect people. Let’s say your friend Abe is in grad school studying Mongolian poetry. You meet a women, Suzy, at an event who is an interpreter for the National Association of Deaf Mongolians. So you fire off a couple of emails introducing Abe and Suzy. Suzy can ask Abe questions about which grad programs in Mongolian studies are worthwhile, and Abe can ask Suzy questions about jobs for Mongolian speakers- and maybe even get an “in” at the National Association for Deaf Mongolians. Both of these people are happy, and they are happy with you. Which means that when you need some help from them, they’ll gladly help you out.
Finally, some people are just happy to help people out because it makes them feel important. Everyone loves feeling like the expert or the mentor. So people will sometimes help you find an 'in" into a company, tip you off on an upcoming job, or whatever, just because it’s an ego boost for them.