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.)
Tools. You don’t need much to work as a home-based freelance writer, but there are some tools that you must have. The most important will be your computer. Get the fastest Internet access that you can afford. It doesn’t matter what kind of computer you get. Just make sure you’re comfortable enough to spend a lot of time with it. Most clients will request that you submit your work as a Microsoft Word document, so make sure that whatever programs you use are compatible. In addition, because you’ll be spending so much time at the computer, make sure that you have a good work area with proper lighting. Some clients will want to be able to reach you by phone or Skype, so have both set up and accessible. You’ll need an invoicing program, such as Freshbooks, and a good bookkeeping system to keep track of sales, orders, and accounts receivables.
This isn’t to scare you off. I simply want you to know that this guide is going to focus solely on ways to make real, sustainable extra income online. Not just a few bucks. I want to share all the mistakes I've made that got me to where I am now so that you don’t have to go through them, and can build a successful online source of income for yourself.

22. Advertising – This is definitely the most old-school way of earning money with a blog. It’s also starting to become the least common way. You can sell advertising spots directly on your site or you can sign up with a company like Google AdSense or Media.net. Either way, you won’t see a whole lot of money from ads until your views are well into the thousands each day.
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.
Considering that you have a finite amount of time, passive income should make up a large part of your work. If you're serious about generating any semblance of income online, then passive income should be one of your sole goals and ambitions. Why? Wouldn't you prefer to do the work one time and get paid repeatedly as opposed to relying on your time to generate that income? Invest the time at the front-end so that you can reap the benefits on the back-end. This means putting in a bit of sweat equity and not getting paid today. Rather, you'll get paid somewhere down the road. And you'll continue getting paid whether you keep building that passive income stream or you stop. 
If you have anything you want to sell, then EBay is the place you need to seriously consider doing it first. Personally I’m not a fan of the site because of the work it takes to build up a reputation. If you’re willing to grind through that process, you’ll be rewarded with many privileges – people have gotten rich selling books about how they got rich selling everything on EBay: Click here for a few tips from the pros.
If you’ve got a way with words and expertise in a niche, there are plenty of sites that will pay for articles and content you write. Think of the sites you read regularly. What can you contribute to them that would be interesting? Research your niche and then look for ways to pitch articles. Many sites will simply have a submission or contact link in the footer. To get started, check out my full guide to becoming a freelance writer on the side and then submit your articles to places like Instash, Listverse, TopTenz, A List Apart, International Living, FundsforWriters, and Textbroker.
You might be desperate for work, but don’t necessarily jump at an opportunity that sounds too good to be true. In my article about common Craigslist scams, I wrote about fake employers who “hire” new employees, then “accidentally” send them too much pay. They’ll ask their victims to wire back the difference, but a few weeks later, when the bank discovers that the initial check is a fraud, the “employee” is on the hook for hundreds, sometimes even thousands of dollars. If a job offer sounds too good to be true, it probably is.
If you don’t mind doing other people’s chores, then TaskRabbit is a great option for making money online. Earn extra income by walking your neighbor’s dog or mowing Mr. Smith’s lawn. It might seem like not the most lucrative option, but the top taskers reportedly earn as much as $7000 a month, making this a full-time way to make money online for some.
Breaking In. Many people find that once they’ve completed their training, getting their first job can be difficult because many companies require a minimum of two years experience. Many newbies start out by volunteering to get some history under their belt. It’s not impossible to land a job fresh out of school, but you’ll need diligence and persistence, and probably a little luck.
Be professional. When you submit a résumé, don’t type it in ALL CAPS and please don’t avoid the caps lock like the plague. Know how to use it without looking incompetent. Write in complete sentences with proper grammar. Of course, there will be exceptions, but even with the exceptions, you must keep it professional. You’re building their view of you.
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