Signing up with Google AdSense will enable you to make money from advertising on your blog. Google AdSense will place relevant ads around your site, and if your site visitors click on these ads, you will earn a fee. Although each click only amounts to small change, if your blog has high levels of traffic and lots of page views this will quickly amount to a reasonable sum.
Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online.
Fiverr is one of the biggest providers in the gig economy on the web and you can sell a wide variety of services and products through this medium. Do the research and find out what you can offer. However, keep in mind that like any other money-making task, it takes time to succeed here. And stellar reviews will help you generate more and more income over time.
Selling digital products can be just as successful as selling physical products. Graphics, software, eBooks, design elements, sound effects, songs, and videos are just a few types of digital products that are in popular demand. So if you can turn your hand to creating digital products, let’s have a look at how you can make money online from this skill…
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. 
Once people find your blog, they are going to want to come back and read the next thing you have to share. Now, if the next thing that you want to write about is three months later, they are going to forget about you. If the next thing that you want to write about is just a poorly written article, that just doesn't connect with your people anymore, your customer avatar, etc. Your audience is going to leave and not come back.
The contents of this article are not in any way revolutionary. Given enough time (this actually took much longer than I expected), you could easily compile a similar list. The concept of making money online is so broad, however, that I wanted a resource that captures most aspects of it. Take from it whatever you’d like, or simply bookmark it for future reference.
E-mail marketing is one of the oldest forms of making money online. As the old cliche goes, “the money is in the list.” Within the MMO niche, e-mail marketing has become somewhat annoying, but there are some people who still do it well. I like to think my newsletter subscribers get value out of my e-mail, as I very rarely promote anything. I think e-mail marketing is critical, not just because it’s a way to drive traffic to things that make you money, but because it’s another way to stay in touch with people who follow your website, blog, or brand. I only use Aweber, but I thought it would be helpful to include a list of alternatives. I’ve noted the ones that are free.
Offering specific online SEO services is also another online freelancer role that businesses are crying out for. If you know how to improve a website’s SEO by doing keyword research, creating content that can rank in search engines, adding metadata/schema to posts and pages, and building backlinks to a domain, to name a few tasks, then this could be a great line of work for you.
If you know your way around a computer and can type fast, consider doing paid tasks for companies on the Internet. You can do data entry, web design, researching information and so much more. You can register for online micro-task companies. You will get to work with clients who need to get projects done and will be able to work from the comfort of your own home.