While it often takes a significant amount of time and hard work to build up your affiliate income, if you have the ability to regularly publish high quality content that drives in targeted traffic to your website, this online revenue source can become quite substantial. Follow along with my experiment growing a new blog, called SmartWP about WordPress, into an additional revenue stream for my business.
If you have deep knowledge of one or more subjects, you can make money teaching online, such as at a site like Udemy.com. Some instructors there are making a lot of money, but many are just making a few thousand dollars a year -- or less. Still, even that can be very helpful. The money you'll make will depend on how many students take your course, which will depend, to some degree, on how in-demand a topic it is, and how well marketed it is. Note that once you do the work to create a course, you can most likely re-use much or all of it later.
 @Philip Taylor I was merely using medical science as an example profession. It’s quite obvious that you don’t have any professional courtesy and downplay professions in which you don’t understand. Logo design isn’t just logo design. I don’t know what the profession of a public accountant entails, or a lawyer perhaps, so I’m not going to give advice on matters that I don’t especially have knowledge in.
There are many ways to get people onto your list. Lead magnets are one such resource. For example, you can build ebooks, checklists and cheat sheets. But you can also do content upgrades, such as PDF versions of an article with added resources in them, four-part video training series, and more. Think about your audience and what you can offer them to better serve them, then treat them with some respect and you'll eventually reap the rewards.
Research individual companies in your desired niche: If possible, it’s always better to become an affiliate directly with a company (if they have an internal affiliate program), as no one else will be dipping into your commission rate. This is the preferred route for most of the prominent affiliate marketers, including Pat Flynn. Unfortunately, it’s also the most work, as you’ll have to do the research yourself to see who offers programs (they’re usually listed in the website footer).
Companies like Uber and Lyft offer a great opportunity to make some quick cash. You'll need a clean driving record, a fairly new car and the authorization to work wherever it is that you live. If you have all of those things, you can work when it's feasible for you, whether that's in the middle of the day during rush hour, or in the wee hours of the night on a weekend. The choice is yours.
Then, if my piece of content is so unique and valuable around hiking backpack recommendations, that other reputable outdoor websites are willing to link to it and build the page’s authority, then I’d have a very real opportunity to rank high in organic search for these search terms (meaning, my page will come up first when someone searches for hiking backpacks).
If you love working with kids, you might want to check with local schools to see if they need any coaches for any sports you know well or if they need anyone to head up any other after-school activities, such as an Academic Decathlon team or a debate team. Perhaps look into becoming a referee for any sports you know well, too -- that's a way to make some extra money while being active and participating in a sport you enjoy.
Do you posses a specific skill-set? It could be anything from sharing legal advice, informing businesses on how to become more eco-friendly, or assisting startups on how to get off the ground. Consulting or coaching can be a lucrative side business since it's easy and affordable to start, since you already have the knowledge and experience. And you can build your own schedule so that you can offer your consulting services whenever you have the free time.
High-ticket consulting or coaching: You could sell your own high-ticket consulting or coaching products from your website. You'll still need a website, merchant account, sales funnel, lead magnet and many other items. But you can easily earn a substantial amount of money from each individual customer, making it well worth the arduous setup required. 
If you’ve got expertise in a certain area, package up your knowledge into an online course and sell it. This has become a very popular business model for online entrepreneurs over the past several years. The two big websites that are used to sell online courses are Udemy and Teachable. Check out this awesome article by Regina on How to Create an Online Course that Sells.
Whether for high school students or adults, you can monetize your expertise by teaching people with less experience or knowledge than you in that subject area. You can work with an established group like Kaplan for, say, SAT tutoring, or you could try hanging out your own shingle and making your services known either to students, parents and schools in your community. If you are targeting adults, you can create your own website or list your services with adult tutoring companies.
A service like Paribus or Earny will help you collect refunds you’re owed from stores. This is a great way to potentially put some extra earnings on autopilot because you’re using an innovative tool to get a refund you deserve. When you make an on-line purchase at a Paribus monitored store. Paribus engages with the retailer on your behalf and files a claim requesting a refund.
Using a food delivery service can’t necessarily earn you money, but it can help you save you money if you constantly find yourself throwing out half the food you buy. Food delivery services send a box of food every week with new, sometimes unique vegetables, meat, fruit, and so on. If you don’t have time to shop and want simple meal-prep that leads to a good meal, a food subscription service may be perfect for you.
The hardest part in making extra money is always the FIRST STEP in how you can earn extra cash. These tips will serve as a spark for those who are really confused where and when they should start with this financial journey. Making money is not all about intelligence, it is all about making your intellect work for you to have money. It is the wit-the “street-smart” style of approaching things.
If you frequently hear about what a nice voice you have, and even if you don't, you might want to look into doing voice-over work. This is a serious career for some people, and you could pursue having it be your career, but that will take considerable effort. Alternatively, at sites such as Fiverr.com, you can offer your services at a reasonable rate per hour, perhaps starting with a low rate until you've gotten some takers.
Teaching and tutoring English as a second language is a great way to make money online, not to mention open some doors for you to travel the world if you'd like. While full ESL (English as a Second Language) accreditation is recommended, as long as you’re a native speaker and have the ability to teach, there are people in countries such as Hong Kong or the UAE who are willing to pay upwards of $25/hr for you to tutor them English via Skype. Check out Indeed, Learn4Good and Remote.co for remote english tutoring jobs or sign up on a specialized site like VerbalPlanet or Chegg Tutors.

Worth noting is that Postmates doesn’t even require that you deliver by vehicle — a bike will do.  Better yet, there are no startup fees or time commitments with Postmates and all you’ll have to do is pass a basic background check to get started. Once Postmates verifies your identity, they’ll send you a delivery bag and a prepaid card (in the mail) that you’ll use to purchase delivery items.


Create passive income. If you have money saved, you can utilize this as a nest egg to create passive income. There are many ways to create passive income, with the easiest being to open a high interest savings account, which offers a much higher return than a normal savings account. Investing in stocks can also provide you with a passive income, but requires up front research and stringent monitoring of your portfolio.
@moxie1956 Thanks for sharing your experience with CashCrate.com. That’s certainly disappointing to hear that you weren’t able to make the $50-$75 a month that I expect. Maybe they are just going through a seasonal downturn or something. Like I mention above though, the real money with Cash Crate comes in the referrals. Find a way to consistently refer a large amount of people to the site.
Every year, hundreds of millions of documents are notarized in the United States: wills, mortgages, citizenship forms, handgun applications. While for decades, this has all been done in person, there is a budding crop of sites that allow notaries to take their services online. If you’re already a notary, you can sell your services online. Or, if you want to get started, check out the National Notary’s checklist for becoming a certified notary.

Become a proofreader. All kinds of businesses hire professional proofreaders to look over their copy and content for errors before they publish. This side hustle is one that could work for nearly anyone since you can work from home provided you have a computer and an internet connection. You can find online proofreading jobs through websites like Indeed.com and FlexJobs.com
As you start regularly putting out content, you’ll hopefully start to build a bit of an audience. But to start seeing real money from YouTube you need to market your videos elsewhere. Share your channel on Twitter and Facebook. Distribute videos anywhere else you can think of. Also, interact with comments and build a community around the videos you’re making so people will share it with their friends.
Now that you know how to make extra money, try a few of these (or all 30) and see if you can generate a nice little chunk of change. You can use these ideas no matter what Baby Step you’re on! Take that extra cash you bring in and toss it at your money goals—things like paying off debt, saving up for your emergency fund, or putting a little extra toward retirement. With extra dollars in your pocket you’ll be kicking major butt on your goals in no time!
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