Definitely read the series.
Networking isn’t just about other DJs and promoters. It’s about gaining value. Sometimes it’ll just be getting the local regulars to know you and like you. Sometimes you’ll find networking will lead you to guys who have sounds, lights, hookups for printing, web designers, etc. Suddenly you all band together and throw events.
Another part of all this though is to get noticed and liked. Look into the article on other things you can do. Part 13 if I’m correct. Promoting, producing, blogging, podcasting, etc…it’s all ways to “make a gig” for yourself outside of the usual ventures.
Take a look at the series and ask questions if you have them. I’m actually working on some more detailed ideas on things DJs can do with YouTube, how to really engage people in social media, and talking about how to throw/promote events.