[vinibrito]

"have much of a network." There is your answer, basically walking up to them and talking to them.

[jcofai]

This looks naive but where do I approach them to build the network?

[AznHisoka]

Are there any events where they might hang out in? If you live in a major city, Lu.ma is a good place to check, but also Meetup as well. How about conferences or social events?