Whether it’s an important consumer application, a specialist app to solve a particular niche problem, or even a time-wasting game you can play on your phone, you can create a massively successful business if you build software that helps people. (Look at the rise of Slack—the team communication software that went from side project to billion-dollar company in just 2 years.)
Don't sacrifice morals for a quick buck — At the outset, you'll want to do all sorts of things to make money online, but don't sacrifice your morals for a quick buck. Not only will you put people off, but you'll lose Google's trust. You also shouldn't concern yourself with things like Adsense or other ads on a blog before you have around 100,000 visitors per day. Yes, per day.
Set up a roadside stand. Depending on where you live, you could profit handsomely by setting up a roadside stand. If you live near a resort area, for example, you could buy cases of bottled water, put them on ice, and sell them to passers by for twice what you paid. Selling fruit and produce you grow yourself is also a smart idea in highly-traveled areas.
While this won’t get you rich by any measure, you can sell products online using sites like Craigslist, Alibaba, eBay and even the Amazon Marketplace. In fact, these are some of the top online destinations where you’ll be able to easily reach the masses. Instead of building your own ecommerce shop, selling products on these marketplaces, can be an instant boon for you.
However, as you might already likely know, this does require a tremendous amount of effort. Not only do you need to have the products, services and information that you intend to sell, but you also need to build an online shop then get people to visit it. You need some serious knowledge of online marketing and search engine optimization in order to do this. It’s not easy by any means.
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But don't make the mistake of thinking this will be a passive source of income—you're on call whenever you have a guest and you'll always need to keep the place clean for incoming visitors. On top of just renting on Airbnb, consider offering your guests paid add-ons, like Lauren Gheysens', Royal Day Out in London, England—where she gives visitors a local's only tour of the city, complete with bespoke 18th century costumes.
You will need to ensure that you adhere to a few principles when doing this. You need excellent photos, so investing in a good camera is well worth it here. You also need to ensure a meticulous description of the product, new or used. People appreciate the attention to detail and it will go a long way when trying to sell anything through these bustling online hubs.