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. 
Learn then selling guidelines. Each marketplace has guidelines that define what you can and cannot sell. State and federal laws also impact what items are prohibited. In general, you cannot sell alcohol, weapons, service contracts, animals or event tickets. Also, while not always prohibited, you may find restrictions on how you can sell items in some categories, such as art, gift cards and coupons.[27] eBay, Craigslist and Amazon publish these guidelines on their websites.

​Self Publishing is mainstream today. When you purchase an eBook off of Amazon there’s a pretty good chance you’re buying a self-published book. Self-publishing is also ridiculously easy. I tried this a few years ago and couldn’t believe how simple the process was. To self-publish a book you’ll first need to write and edit it, create a cover, and then upload to a program such as Amazon’s Kindle Direct Publishing. Don’t expect instant success though. There will need to be a lot of upfront marketing before you can turn this into a passive income stream.

Many new users prefer to start off with the 100% Free Offers, which is what we usually recommend. These offers are great for beginners because nothing is required other than several minutes of your time. The payouts on these offers are lower, but you’re not paying a dime to complete them and they’ll get you use to the CashCrate system. After you’ve started making money online with our free offers, you can always move on to trial offers and increase your earnings.
Better yet, you can even upload your own book to one of the world’s largest book sellers: Amazon. With Amazon self-publishing, you set the price, retain the rights to your book, and get access to Amazon’s massive audience. For every sale, you keep 70% with Amazon taking the remainder as a fee. If you want to get started, check out Leslie Samuel's great guide to selling eBooks online or follow Tara Gentile on CreativeLive as she shows you how to use your existing body of work to write an eBook within the next week. Who knows, you might just write one of the best business books of this year!
JVZoo lets you both host and create landing pages on their own website, so it’s far better suited for professional marketers who want to flood the internet with offers, many of them for courses to make money. You don’t need your own website to participate in JVZoo, but you will need to know how to drive traffic to a landing or squeeze page in order to profit from being a JVZoo affiliate.
Get samples. When you first start out as a freelance writer, it can be hard to get work without any published samples. However, it is possible to get quality samples if you are willing to do some writing for free. First, you can publish content on your own blog or website. Also, you can write guest posts for someone else’s blog. Finally, you can write blog posts for free in exchange for a byline.[20]
Affiliate marketing currently lacks industry standards for training and certification. There are some training courses and seminars that result in certifications; however, the acceptance of such certifications is mostly due to the reputation of the individual or company issuing the certification. Affiliate marketing is not commonly taught in universities, and only a few college instructors work with Internet marketers to introduce the subject to students majoring in marketing.[41]
Hi, Jamie! Very good list. I needed something like this for 2018 so that I know what to target in the future blogs I create. As for now, I’m comfortable using SiteGround affiliate network and it’s pretty good actually. Their hosting service is pretty much the best considered its price. I’ve tried others but SiteGround stands out. I’ll also try new affiliate networks, something from the list you have just provided. I think Amazon is too saturated at the moment, and I need a better network. 2018 will be interesting indeed.

People are turning to audio and visuals when it comes to technical subjects. However, you should consider doing an ebook first and turning it into an audiobook through a resource like Audible's ACX platform. You can hire a producer either through a royalty share program, so you don't have to shell out upfront cash, or you can do a pay-per-hour hire as well.