I may as well start with something I know well. When I started out as a freelance writer 20 years ago, things were very different. I wrote mostly for magazines, and I had to rely on snail mail to send out drafts and queries. I’d wait weeks for a response from my editors. Not many people had the patience for it, and few stuck around long enough to ever start earning a real income from it.

And while it will take time to build up a big-enough audience to attract advertisers and other ways to make extra income from your podcast, the opportunity is there. John Lee Dumas interviews entrepreneurs seven days a week for his podcast Entrepreneur on Fire and now makes more than $200,000 a month from it. In fact, John publishes all his income online and showed that he’s made almost $13 million since launching in 2012.
Do you love getting refunds? How cool would it be to get money back on stuff you’ve already bought? Paribus is a service that lets you find out if stores you’ve shopped at online owe you a refund.  It’s free to sign up. Paribus connects to your email account and checks your receipts.  If they find out a retailer has dropped their price they file a price adjustment claim for you.  Try out Paribus.
Do you constantly come up with witty one-liners? Do you dream of the days of Mad Men-style advertising? If you’ve got some branding chops or just come up with imaginative copy, there are lots of opportunities to make money online through company naming and slogan contests. If you think you have a knack for names check out the Squadhelp platform where you can earn a little extra money online by naming brands, services, products, company slogans and even help out on the logo design front if you've got the chops.

Have an extra room in the house? Try renting it out on Airbnb.com. According to Smart Asset, you can pay up to 81% of your rent by listing one room in a two-bedroom home. If you're really looking to ring in the cash, renting out a private home or apartment is the way to go. According to Smart Asset's findings, rates for full apartments are significantly higher than those for just rooms, with annual profits ranging from $15,000 to $31,000 for a two-bedroom apartment.
The difference between Amazon and EBay is that EBay (though still filled with new items) is seen as a used marketplace between individual parties, whereas Amazon (which is filled with offers for new and used merchandise from the 3rd parties) is viewed as a Wal-Mart-type superstore. As a consumer, this difference leads me to use Amazon, so it only makes sense to target on my own demographic.
Whether it’s an important consumer application, a specialist app to solve a particular niche problem, or even a time-wasting game you can play on your phone, you can create a massively successful business if you build software that helps people. (Look at the rise of Slack—the team communication software that went from side project to billion-dollar company in just 2 years.)
Amazon and Google are far from your only options for online advertising. Rakuten Linkshare is a great place to search for other affiliates for your ads. Through their program, you can get customized ad links, email links, and banner ads for Starbucks, Walmart, iTunes, and a slew of other popular brands. With this program, you can also find smaller companies, regional or specialized brands, and more. I run a combination of Google, Amazon, and Rakuten’s programs, and my monthly income is approximately $150 from these programs. It’s not a lot of money, but it’s also not a lot of work for residual (it means recurring…since the ads are permanent…) income.
You’d do most of your work in a home garden, but you’ll have to spend your weekends away from home. If you love the idea of selling your home-grown produce, but can’t swing being out of the house on weekends, consider selling to friends, family, and neighbors instead. Almost everyone prefers the taste of a fresh picked tomato to a store bought one.
However, like anything else truly worthwhile, apps require a significant investment of your time or money upfront. If you don't have the skills, then you have to hire someone who can assist you in creating a great app. But first you need to come up with an idea that will sell. Do the proper market research and analytics to come up with the right app.

If you’ve got some free time and don’t live in the middle of nowhere, becoming a Lyft driver can be a very lucrative side hustle that allows you make money fast. And right now, they’ve got a promotion going on where any new driver will instantly get a $300 bonus after completing their 100th ride. If you start now and hustle hard on the weekends, you can probably unlock that bonus within a few weeks of driving (and that’s in addition to your normal earnings).
If you’re willing to take on some risk and have the heart of a true hustler, you can make extra money online doing commission-only sales for startups and other businesses. While you won’t be getting a regular salary, with the right sales strategies and skills as an inside sales rep, you can make decent money for each sale you bring in. And because you’ll most likely be working with startups, if you can negotiate a little equity you could profit big time if you're pitching a solid product and the startup succeeds.
You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort. 
Etsy is the most popular online marketplace for handmade goods and crafts. From bracelets to phone cases, rings, furniture, and more, Etsy is perfect for anyone who is creative and wants to sell their handmade creations. As long as you have the space, this can make for one of the best ways to make money online that can be started with a very limited investment. Consider these 5 steps to starting an Etsy store, from Handmadeology.
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income. 
If you have a propensity for writing and you can slay with your prose, consider writing an ebook. While the market has certainly become saturated as of late, books that help teach people about a technical topic still sell extremely well. This is a great source of passive income but does require a large amount of effort at the outset before any money is generated.
Become a Graphics or Web Designer. Due to increasing needs to conduct business on the internet, the need for people who can create websites and graphics on the net also increases. This will be ideal for people with knowledge in various computer languages, graphics designing and image creating software, and programming. Stay up-to-date with the latest technology to make your talent in demand.[5]
As an Instacart personal grocery shopper, you will actually be doing the grocery shopping yourself (so don’t crush anyone’s avocados!). Your compensation depends on several factors, like the average size of your orders and average number of miles driven per trip. You can also get tips in addition to the pay that comes directly from Instacart (most people report an average earnings rate of $15 per hour).

For some people, work just has to be in an office, factory, store, or any other environment that’s separate from home. Even a second job would have to be in a separate place. For others, a home office is a welcome place for a secondary or even a primary job. If you’re one of those people, you have some unique opportunities, but you also have some very particular challenges of working from home.
Hunt for under-priced used books that you can sell online. Download an app that reads ISBN numbers so you can scan the barcodes on books. This will pull up the book’s current price on Amazon so you can see if it’s worth trying to resell it. Then, visit used book stores, thrift stores, and garage sales to look for high value books. Post the books for sale online using sites like Amazon or Ebay.[9]
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