Ebooks are one of my favorite sources of passive income. Now, you can do this the simple way and just publish it on Amazon's KDP. Or, you can go all out and build yourself a book funnel. Book funnels are powerful, but they won't be fully passive. For example, if you do a free-plus-shipping offer for your ebook (converting it into a physical book), you'll need to create some one-time offers (i.e. extra training) and up-sells (i.e. an audiobook). But, a book funnel can be very powerful.
Why? Because you’re working a 42 hour week and that’s probably your earnings ceiling unless you add other income streams. 4 hours per week is best for me, since I have domestic responsibilities I’d much rather be addressing: Still, when I get the chance, I love working my socks off on something I enjoy, which is helping and teaching other people to be successful. It’s more fun and more productive to share 🙂

Also, if you pursue an income stream like affiliate marketing, your blog can be a source of content that allows you to link to affiliate sites in a way that is seamless and natural. For example, if you are an affiliate marketer for a company that sells productivity tools, you can blog about your own struggles to stay on top of your to do list. Then, you can mention how much those tools have helped you.
Investing in rental properties: Another form of real estate investment, rental investments (i.e. becoming a landlord) could steer you down the passive income path of steady monthly rent checks that you can use to pay off a mortgage loan on the rental property. After the mortgage is paid off, those monthly checks go right into your bank account -- potentially for years to come. 
Anthony, nice setup! To your question about the rental mortgages, you haven’t said what interest rate you are paying. As a start, if you are paying more than the risk free rate (Treasury bills) which you probably are, then a true apples to apples comparison would be yes, pay off the mortgage. But, if you are comfortable taking more risk, you have other options to invest in which you *hope* will yield you more over the coming years. You also didn’t say whether the rentals generate net income and if so, how much? What is the implied rate of return on the equity you have invested in them? If you pay the mortgages off, you’ll have even more equity tied up, will the extra net income make that worthwhile? Maybe you should use the money to buy more rentals instead, if purchase opportunities still exist in your town. … this is less of an answer than a framework to analyze the decision, hope it is helpful.
What I did: I first identified my favorite places in the world to live: San Francisco, Honolulu, Paris, Amsterdam, New York City, and Lake Tahoe. I then looked up the median rent and housing prices for each city. Then I factored in private education costs for two kids to be conservative given I may not have two kids and public schools are often good enough. After calculating all vital costs, I then did a self-assessment of how happy I was making $50,000, $100,000, $150,000, $200,000, $250,000, $350,000, $500,000, and $750,000. I decided working 20 hours a week making $200,000 a year is the best income balance for maximum happiness. 
Using ad networks like adsense doesn’t prevent you from targeting advertisers directly. In fact, that’s how I started; I searched the net for potential advertisers who advertised products relevant to my content and offered them yearly packages. If you choose this option, bear in mind that you’ll need to provide traffic reports and other site statistics.
2. You clearly have plenty of money already. Just more padding in your already cushy nest. This is not the story for a lot of people. Your title should be “How to become richer than you already are without working.” But, actually the investment one is the only one that would make money without actual WORK. Running rental properties is a lot of work, and so is running a business, or even a blog. Sooooo…..while there might be some truth to this, I think it’s mostly grass that looks greener because it’s on the other side of the fence.
How to Monetize: Affiliate marketing works well when you discuss products on your blog. For our fish tank blog, we would link to all the things you need to buy for an aquarium and then when people click on that link and buy that item (and other items they purchase with it with some exceptions) you get a percentage of the purchase. Amazon Associates is the best-known affiliate marketing program, but there are others like Impact Radius, ShareASale, Commission Junction, ClickBank and Rakuten too.
I see you include rental income, e-book sales and P2P loans as part of your passive income. Do you not consider your other internet income as passive? Is that why it’s not in the chart? Or did you not include it because you would rather not reveal it at this point? (I apologize if this question was already answered – I didn’t read through all the comments, and it’s been about a week since I actually read this post via Feedly on my phone)
In order not to succumb to that, Flynn says it’s important to know your motivation. “Passive income is important to me not just for the financial security but so I can spend time with my family,” he says. “I’ve been able to work from home and witness all my kids’ firsts. I have a one-year-old and a four-year-old, and that's what drives me and gets me pushing through those hard times and why I keep creating new products and why I want to help other people do the same thing.”
That’s confusing, so let’s take a simple example. I create a free newspaper, and give away the value (information, entertainment) to people at no charge. By doing so, I’ve created a powerful form of secondary value: the attention of my readers. I then rent this value out to advertisers, who consume it regularly. If an advertiser leaves and I find a new one, the fact that the other advertiser consumed value before is of little or no concern to the new consumer.
The much loved model for bloggers and content creators everywhere and for a good reason…it’s pretty easy to write a 60-80 page ebook, not hard to sell say $500 worth a month through online networking, guest posting and your own SEO optimized blog, and well you get to keep a large whack of the pie after paying affiliates.  Hells yeah!  Continue reading >