Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent.
Choose your niche and check for demand: The golden course combination is when you can find an in-demand niche that aligns with your skills and unique experiences. A great way to do this is to use Google Trends, Google’s Keyword Planner and other key blogging tools to do keyword research and look for average monthly search volume for keywords related to your proposed course content. Are people actively looking for high-quality information about this subject? Of course, if you’re already creating content for a blog, coaching service, or a site like Medium, you can test demand this way for free just like Bryan did.

20. Etsy – If you like to create arts and crafts, you can sell them on Etsy.It’s completely free to open an Etsy store. You simply sign up, post pictures of your creations and starting selling. You can choose your payment option, but PayPal is generally the easiest. Etsy makes it easy to sell and keep track of your inventory. There is a small listing fee and they take 3.5% of every sale you make.
Accommodate Multiple Forms of Payment. Many deal-seekers carry cash, but you want to accommodate every potential buyer. So in the days leading up to the event, consider purchasing a point-of-sale system that can accept credit cards. Square is a popular and relatively cost-effective option. It doesn’t cost anything upfront and bundles credit card processing fees into one relatively low fee: 2.6% plus $0.10 per transaction, for a net of $97.30 for every $100 charged. It’s a small price to pay to capture the ever-growing cashless consumer demographic. On the day before the sale, visit the bank and grab $100 in small bills and coin rolls to ensure you’ll have enough change for buyers who do prefer cash.
Considering that you have a finite amount of time, passive income should make up a large part of your work. If you're serious about generating any semblance of income online, then passive income should be one of your sole goals and ambitions. Why? Wouldn't you prefer to do the work one time and get paid repeatedly as opposed to relying on your time to generate that income? Invest the time at the front-end so that you can reap the benefits on the back-end. This means putting in a bit of sweat equity and not getting paid today. Rather, you'll get paid somewhere down the road. And you'll continue getting paid whether you keep building that passive income stream or you stop.