If you've developed valuable skill sets or picked up certifications within your industry over the years, offering your consulting services to local business owners can be a lucrative way to make money online. Whether you're an expert marketer, business strategist, or manufacturing aficionado, there's likely a local business owner who's willing to pay you to help them solve an issue with their company. Start with this 18-step checklist to becoming a local business consultant from Karyn Greenstreet and then use my guide to crafting an effective cold email to convince them to hire you.
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. 
If you have a budget and are willing to pay for traffic, you might want to explore investing in Facebook Ads, Google Adwords, Bing Ads or any of the other networks you can buy traffic from. Their first advantage is a double-edged sword. You can literally start receiving traffic within minutes from starting a campaign. But once you stop running the campaign, the “traffic tap” stops.
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.
When was the last time you went to a new restaurant without looking it up online beforehand? Or bought a product that didn’t have at least a few 5-star reviews? It seems like more and more our world is run on reviews. And you can make money online by writing them. Get started by creating accounts on sites like Vindale research, Software Judge, FameBit, CrowdTap, Influence Central, and Modern Mom. However, before you run off and start writing, be sure to check the small print on each of these sites. Writing reviews isn’t a huge source of guaranteed income and you want to make sure that it’s worth your time before you get going.