First off, I’m a blogger so it seems wrong not to mention it, but more importantly, it’s a legitimate way to make money. It’s quite possibly the least straight-forward way on this list, but it’s very doable and it’s also quite possibly the funnest way on this list. I love blogging and I know hundreds of bloggers who feel the same. So let’s talk about making money blogging and what it really means.
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. 
And while you’re at it -- don’t create an additional public, “professional” profile associated with your business. For example, I already have a personal profile on Facebook that I largely keep private; the practice I’m talking about would be if I created a second, public one under the name “AmandaZW HubSpot,” or something along those lines. People usually do that to connect with professional contacts on Facebook, without letting them see personal photos or other posts. But the fact of the matter is that creating more than one personal account goes against Facebook's terms of service.