Write a blog. If you have a business, consider starting a blog as part of your marketing plan. You can write how-to articles, product reviews, answers to questions and posts about upcoming events. Blogs give you more flexibility than other forms of social media like Facebook or Twitter because you own the content and aren’t bound by a third party’s rules or restrictions. Also, if your posts include keywords or phrases and link to internal and external content, you can improve the search optimization of your website. Blogs drive sales because you can include product information and links to product pages. 
Most of us love the idea of earning extra income or quitting our full-time jobs altogether and working from home. If you thought work-from-home companies were just running scams, it turns out there are plenty of authentic and reliable ways to make money by working from home. Christine Durst, cofounder of RatRaceRebellion.com and consultant to the FBI on internet scam issues tells us, "There is currently a 61-to-1 scam ratio among work-at-home job leads on the internet—that is, for every legitimate job, there are 61 scams." But, there are a lot of opportunities for a "real job." The secret is knowing how to separate the scams from what's legit.
It's NOT easy, but it is very profitable if you know what you are doing. And yes, there is a good potential for passive income. I find most Internet Marketing coaches are bogus, and just want your money. I learnt from someone of very high integrity called Eric Holmlund and he offers is teaching 100% free. His main angle is marketing digital products. I wrote my impression of him and his tips here if you're interested
If you can do everything, then you can become a one-man film crew who allows a company to cut costs while still enjoying video advertisement revenue. That makes you powerful asset, because it allows the company to reduce risks and can help keep you employed full-time. So, if you’re already a pro at setting up a shot, make sure you also have mastered the software you need. If you’re a wiz on the computer, try doing some Facebook Lives, interviews and other sorts of videos to make sure you’re prepared for anything.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.