I make a little bit of money off of referring people to services I truly believe in. I never recommend things I don’t personally use, but if I’m going to refer friends to Shopify, products on Amazon, or Udemy courses besides my own, I have no shame making a couple bucks off it. In most cases, these referral sales come from older links within my podcasts or courses, and therefore, are completely passive.

- HubPages.com is a content community for writers. Members (referred to as "Hubbers") are given their own sub-domain, where they can post content rich articles (known as Hubs). As a Hubber, you earn revenue primarily from Google AdSense (you need your own Adsense account) and other advertising vehicles such as, Kontera, and the eBay and Amazon Affiliate programs. There is a 60:40 revenue split and it’s achieved by alternating the code used in advertisements: Your code will be displayed 60% of the time, and HubPages' code 40%. Same as Squidoo, traffic dropped heavily due to Google's changes but the site is still wildly popular. Currently it’s one of the 500 most visited US sites on the Internet.

If you’re worried about launching a new product, and think you might need some feedback to make it really good, Flynn recommends “pre-selling” an idea — for instance, offering a limited number of spots or seats into, say, a course you create and giving the test group specialized attention so you can see how to improve the content. Once it’s revised (or, if it’s software, once all the bugs are removed), you could open it up to your whole audience.
For those of you who don’t want to come up with a $220,000 downpayment and a $900,000 mortgage to buy the median home in SF or NYC, who don’t want to deal with tenants or remodeling, and who wants to not do any work after the investment is made, check out Fundrise. They are my favorite real estate crowdsourcing company founded in 2012 and based in Washington DC. They are pioneers in the eREIT product offering and they’re raising an Opportunity Fund to take advantage of new tax favorable laws.
This is the best post I’ve seen on passive income streams. I’m similar to you in that I worked in IBanking for a few years but wanted out. My approach is a little different, instead of starting with the CD’s, I’m trying to build up my net worth with riskier asset classes such as stocks and real estate to get the benefit of compounding. Then, as I approach my retirement year goal, I’ll start moving them into CD and bond ladders. In theory at least, it’s best to have the highest net worth just before retirement, then convert them to risk free passive income. You’re method is more patient and probably more practical than mine. I guess I’m willing to take more risks.

4) Treat Passive Income Like A Game. The only real way to begin your multiple passive income journey is when you are making active income. The initial funding has to come from somewhere. Hence, treat passive income as a game that has various levels. If you fail to achieve one level, it’s not the end of the world since you still have active income and can restart. Furthermore, a game is meant to be played with integrity. Using shortcuts (non passive income streams), someone else’s income as a supplement (spouse), or one-offs (capital gains) does not count. The primary purpose of any game is to bring enjoyment to the player and beat the boss.

Flynn has created many different products. While his LEED exam is what got him started, he has both earned a commission from selling other people’s products and offered a commission to others who would sell his wares, and also recently created his first software, SmartPodcastPlayer.com, after realizing that most online podcast players offered only the basic stop/start/volume features. He hired a development team to create a superior one, which was a success from day 1. “We sold out 250 beta licenses in less than 24 hours, because I was addressing a need but also, I had built up an audience and trust with them … When you build that amount of trust with your audience, whatever you come out with, they will love.”

Thank for this extensive work. When you make extra money you need to think simple. First thing you should consider is whatever you do must be safe enough that you don’t lose your initial investment as well. Also, look at the ways you can reduce your costs. This could be car insurance savings or paying back expensive loans or card balances. Saving is making money as well.
"People will pay to learn what you know about programming or designing, how to be a better public speaker, and or how to increase sales. How you design, develop and create your e-course will depend on what you teach, how you teach, and the best way for your readers to learn" Zelenko says. Sure, you'll spend some time and money developing your course on platforms such as Udemy.com or Teachable.com, but once you've created it, there's minimal upkeep.
I like the way you have listed the ways to earn extra income and was quite surprise that you did not make mention of network marketing, which is a way to make extra income without quitting your regular, though most people view mlm as a pyramid scheme but the real pyramid scheme is a regular 9 to 5, because you can only have one president of a company at any given time and network marketing business model to promote product that can be used is really cheap to join and can offer a substantial extra income or what do you think?
I wish I had more time to put into real estate. Given the run up since 2012, I may even be interested in selling my condo that I currently rent out. I need to get it appraised to really see what it’s worth, but I think conservatively it’s gone up ~50%, although rent is probably only up ~10% or so. I am bullish on rents going up in the future… mostly in line with inflation, or perhaps even slightly faster due to constricted credit and personal income growth which should provide a solid supply of renters. At this point, I just don’t want to manage the property. I’ll probably look into a property manager as my time is likely worth turning it into a nearly passive investment.

Thanks for asking. https://passiveincomemd.com/what-is-passive-income/ gives a good summary of the definition I use. But in brief, it’s income that isn’t proportional to the time you physically put into acquiring it. It doesn’t mean it’s not without work or effort. It’s just that most of the work is done up front and it continues to pay off long after that initial effort. Real estate fits into that box. There’s definitely a spectrum but compared to what we do as doctors, where our compensation is directly linked to our time, most of these things are quite passive.

I had to get out. I actually had this random Facebook ad come up in my news feed (go figure) and it eventually led me to a webinar that taught on how to start an email marketing business (which is, by the way, the most profitable form of affiliate marketing – or ANY marketing for that matter). I listened through the whole 2 hours, completely mesmerized. By the end of it, I knew what I was going to be focusing on to help my family out of the pit of debt we were in and into a world free of financial stress. I didn’t know if it would actually work, but eventually it lead to EXCESS income!

Good plan Chloe though I would say include some equity REITs in your real estate investing strategy as well. Mortgage REITs only offer cash flow while equity REITs offer price returns as well, which may be taxed at a lower rate. Real estate crowdfunding is a great new way to invest in real estate and can really help diversify a portfolio. Good luck building to your passive income.
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.
Crowdfunded real estate companies like Fundrise are similar to today’s peer-to-peer lending companies. Like Lending Club and Prosper, they offer a platform that matches real estate investors with investment choices. They help people looking to invest money in real estate in a passive manner. Also, investors can avoid bargaining with sellers. No need to get involved in the transfer of ownership and management of those properties either. 

I have already come up with 50 ways that a management company can screw you for profit without you ever knowing(or not finding out for awhile). Did you have an inspection before you made an offer on the property? Do you have a picture of the property you bought? How do you know if that picture shows the house you actually own? or if it even hows the ‘current’ state of the house you own?