Once you’ve gathered a list, put together a template outreach email (as you’ll be doing this over and over) that’s short and clear with expectations. Tell your potential interviewee who you are, what your podcast is about, and what you’re asking of them. Do a few test interviews with friends and family to make sure everything is being recorded at the quality you want and then book your first episode.
Become a proofreader. All kinds of businesses hire professional proofreaders to look over their copy and content for errors before they publish. This side hustle is one that could work for nearly anyone since you can work from home provided you have a computer and an internet connection. You can find online proofreading jobs through websites like Indeed.com and FlexJobs.com

Market your course: The beauty of using a course to make money online is that you can continue to sell it for as long as you’d like. Look for niche communities on Facebook, LinkedIn, or Reddit that might benefit from your content. Guest post on relevant blogs and sites. Look for anywhere you might be able to get in front of the right people. With just a few hours a month you can continue to generate sales.

Today, not only do we live in an exhilarating time filled with endless possibilities thanks to technology that we once considered to live in the realm of science fiction, but it's also a period that's deeply steeped in the expectancy of instant and real-time returns. The truth is that you can't get rich overnight. It takes hard work and effort. It takes persistence and massive amounts of action. It takes seeing things through and pushing past failure, even as much as you want to give up and throw in that proverbial towel.

And while it will take time to build up a big-enough audience to attract advertisers and other ways to make extra income from your podcast, the opportunity is there. John Lee Dumas interviews entrepreneurs seven days a week for his podcast Entrepreneur on Fire and now makes more than $200,000 a month from it. In fact, John publishes all his income online and showed that he’s made almost $13 million since launching in 2012.

This can include advertising, but many businesses also need help just filling up their social media profiles with relevant (and consistent) content. If you enjoy learning about social media and want to take things a step further and make extra money, social media management is a great option. If you’re good at it, it can also open up a lot of doors for you down the road. This is a great article from Small Biz Trends on How to Start Your Own Social Media Business.
Now let's finally apply these lessons to comparing different industries or industrial belts within the United States. I mentioned that when I was growing up, Route 128 outside of Boston led the world in productivity for an industrial belt, but Route 128 has now fallen behind Silicon Valley. Since my book "Guns, Germs, and Steel" was published, I've spent a lot of time talking with people from Silicon Valley and some from Route 128, and they tell me that the corporate ethos in these two industrial belts is quite different. Silicon Valley consists of lots of companies that are fiercely competitive with each other, but nevertheless there's a lot of collaboration, and despite the competition there is a free flow of ideas and a free flow of people and a free flow of information between these companies that compete with each other. In contrast, I'm told that the business of Route 128 are much more secretive, and insulated from each other like Japanese milk-producing companies.