Let's say you have years of social-media experience and have maintained a blog that has shared needed advice. You can put together your top blog posts and put together an e-book, such as The Ultimate Social-Media Guide for Small-Business Owners, and sell it on your website or Amazon. If you don't have any experience that you want to cash in on but have a knack for writing, say, sci-fi stories, then you can author and publish your novel on Amazon as well.

Build your audience on a course community: If you’re just getting started building an audience for yourself and want to leverage communities already actively looking for content you can choose to host and sell your online course on a site like Skillshare or Udemy. These are easy, cost-effective ways to build an audience and test your niche to see if there’s demand for it.

Could you make an extra $200 per month? Sure. How about an extra $1000 per month? How would that change your life? To most, it would make a monumental difference. But what if  we were talking thousands more per month or even tens of thousands more? How would that alter the trajectory of your life? Clearly, you can make money on the internet. You just have to decide how much of your time it's worth.
Many busy people these days don't have the time or talent to prepare meals at home, and they don't want to eat out too frequently either. Personal chefs are a perfect solution, and you might make some extra money by contracting with a handful of clients to deliver a certain number of meals each week -- or to prepare them in the clients' homes. You might cook for their dinner parties or family gatherings as well. Many personal chefs earn between $35 and $50 per hour.
25. Products – You can create your own product, such as an ebook or computer software. You would then use your blog as a promotion tool to get people to buy your product. As long as you create a legitimate product with a whole lot of value, you should be able to get some buyers, but like everything else with a blog, you’ll need the traffic to get the sells.
Few of us love taxes or tax season, but if you don't mind filling out tax returns and you're good at it, you might make some extra moolah by preparing returns for others. Some companies, such as H&R Block, Jackson Hewitt Tax Services, and Liberty Tax Services, hire seasonal preparers and offer training for them as well. You'll do well to have an accounting degree, of course, but those without that background who take the time to get up to speed on basic tax return preparation may be able to prepare plenty of simple returns.
Most of these hustles are actual full time jobs or careers. It is the people in these occupations who need the extra money. And you can’t just set up a dog grooming business out of your home. I have my dog grooming certificate. First off, there is a lot to know so that you don’t damage a dogs body and fur. You need a proper drainage system for the tub. You need safe shampoo. You need a table that is high enough to make it more comfortable for you and the pet. You need like $600 of equipment (and those are just the basics). You need a proper dryer, so the pet doesn’t get hypothermia. You need to know about skin conditions and allergies. You need to know how to clean their ears and clip their nails safely. There is actually something to it. You can harm animals if you don’t practice safe procedures. It’s not as easy as you state. Most of these ideas aren’t.
And there is no need to be nervous about making such a change to your W-4. The withholding allowances you enter into your W-4 do not determine your tax bill, just how much you pay per paycheck. That means it’s perfectly legal to change the withholding allowances on your W-4, provided you claim the correct number of allowances on your actual tax return.
Ask for a raise. If you’re unhappy with your compensation at your 9-5 job, asking for a raise is one way to beef up your bank account. Most employers offer an annual review of your work – which could be the perfect time to negotiate a higher salary or ask for better perks. If your employer doesn’t offer such an opportunity, it might be time to initiate a review yourself.
Then once you’ve got your domain name and hosting sorted out, it’s time to pick a CMS, or Content Management System, that will let you update pages, build your blog and integrate with all the other services you need. It’s hard to go wrong with WordPress—the CMS powering close to a quarter of the internet. Keep in mind that eventually as you start growing traffic to your blog, you'll be wise to invest in a managed WordPress hosting plan from a company with great service like Kinsta , where all of the settings are custom-tailored and optimized to work particularly well with WordPress-powered websites.
Turn your photographs into cash via sites like Fine Art America, which lets you upload your images to sell as prints, t-shirts, phone cases and more. Other marketplaces for photographers include SmugMug, 500px and PhotoShelter. Some sites require a subscription but may provide features ranging from cloud storage to password-protected galleries and a customized website.
If you're serious about making money online, start a blog. Blogging is one of the easiest and most sustainable income sources. As long as the blog is setup the right way, in the right niche, with the right content targeted at the right audience, and the offer is complementary to the content, you could make a tremendous amount of passive income from a blog.
There are actually gobs more possible ways to make extra money. A little digging online will yield even more ideas -- such as cleaning houses, doing personal shopping for others, house-sitting, teaching yoga, inspecting homes, sharpening knives, and detailing cars. Use these suggestions as a jump-off point to begin looking into generating some easy (or relatively easy) passive income for yourself.

Some websites pay for performance based on page views for virtually anything you want to write about if you have the proven experience and background to cover your beat. Many companies are looking for part-time bloggers to help them create high-value blog posts for their websites—thus, the opportunity for those who have a knack for writing compelling content. Most clients pay per post or on a retainer contract with a set number of posts delivered per month.

Work as an online interpreter or translator. If you’re fluent in a foreign language, it makes sense to look for work as an online interpreter or translator. Depending on your individual skillset, you could find work translating blog posts or eBooks, transcribing recorded lessons or speeches for clients, or translating through Skype or another online video service. And, thanks to the increased use of foreign languages in the United States, getting started could really pay off. According to the Bureau of Labor Statistics, employment for interpreters and translators is expected to increase 17% nationally through 2026.
Disagree with the photography idea. It may seem easy but there are those of us who have spent, in my case 10 + years learning the light, the technical aspects, the right way to pose… we have to keep pushing our prices higher because there are more people starting to eat away at the client base by undercutting…. and we’re trying to make money and feed families too. It only hurts an industry to undercut. Sorry. Good list otherwise, don’t do it as an expense to others.
No matter what method you choose to make money online, understand that you might be able to make some money fast, but for the sizable returns, you'll need significant sweat equity. However, a year from now, you'll be happy you started today. Remember, time is far more valuable than money. Focus on creating passive income streams that will free up your time so that you can quit the rat race and focus on the things that matter. 
Regardless if you need to earn some fast cash or we're just talking about making money in the grand scheme of things, there's an important psychology that needs to be mentioned before getting into the strategies. If you study Freud's model of the mind, you'll discover the Psychic Apparatus. It's the three-part construct in your mind that controls all of your behavior.
If you’re strapped for cash but want to work on your own schedule, you might want to consider becoming a driver for Uber or Lyft. You can drive as much (or as little) as you want and set your own schedule. Plus, you get the added bonus of having interesting conversations along the way (or, at the very least, some fun stories to tell of your travels with strangers).