Building a network in a new field is tough. But 80% of all jobs are found through networking—and to get the green job you want, you can’t avoid it. How can you make it both more enjoyable AND more effective? Get just the right hacks from TechChange CEO and founder Nick Martin, who teaches purpose-driven jobseekers how to network—or, as he calls it—how to build relationships.

With a LinkedIn following of more than 200,000, Martin has made it his mission to help people who want to change the world expand their professional connections. People flock to his page because he’s constantly curating job postings, resources, and people to follow, all around social impact work. He shares his methods for understanding the network you already have, even when you don’t realize it (spoiler alert: it involves spreadsheets), and how you can get the most bang out of LinkedIn in your green job search.