Generating passive income is NOT easy and it takes a lot of hard work. Nothing in life comes easy. Making money online is no different. Many conventional internet marketers and online entrepreneurs will try to persuade you to think otherwise. Why? Because they’re trying to make money from false hopes. I’m here to tell you the truth: Online business is hard. I’ll do my best to guide you and give you the information you need, but I can’t force you to take action; that’s up to you.
I agree mostly with the real estate advice. I’m looking for ways to take advantage of the condo I own to get up the rent from ~$0.90/ft to the $1.2-1.5/ft that seems more like the range in the same area. I’d have to put in a bit of capital (probably 10k on the low end for just the basics up to 40k if I wanted to remodel the kitchen and 2 bathrooms up to par with the area), so the return is likely there if those upgrades warrant $1.30/ft (given the unit is larger than most 2br/2ba in the area).

You can start earning passive income online via revenue sharing thanks to a tactic called affilliate marketing. No, this isn't one of those sketchy "get rich schemes." Affiliate marketing works like this: You, the publisher a.k.a. affiliate, signs up with a business to market its products on your website using banners and/or links within text. If a customer clicks on that content, they'll be taken to the business' own site. And for every one of those clicks that turns into a purchase (an action that's known as a conversion), you'll receive a commission as compensation for your referral.

3. Start as soon as possible. Building a livable passive-income stream takes a tremendously long time, largely because of declining interest rates since the late 1980s. Gone are the days of making a 5%-plus return on a short-term CD or savings account. Today, the best 12-month CD is at 2.5%, and the best money-market rate is about 1.85%, which is not bad, considering such rates were below 0.5% just a couple of years ago. Know that every $100 you save can generate at least $2.5 in passive income.
Whether you take a “distribution” (aka free-cash-flow) in the form of a dividend, interest payment, capital gain, maturing ladder of a CD, etc, you are still taking the same amount of cash out of your portfolio. Don’t fall for the trap of sub optimizing your overall portfolio’s performance because your chasing some unimportant trait called “income”.
As an extreme adventurer, he’s also climbed Mount Kilimanjaro, HALO-skydived above Mount Everest’s summit, broken the sound barrier in a MIG-25 jet and deep-sea dived to the shipwrecked Titanic to have lunch. He even became a certified Russian-trained cosmonaut, rocketed to the edge of space and served as a backup for the “Soyuz TMA-13” NASA flight to the International Space Station.

Many bloggers and social media influencers build significant residual income through affiliate partnerships. If a blogger promotes or mentions a product on their site, and readers purchase the product through the link provided, the blogger earns a percentage of the revenue. The same goes for social media influencers. If someone promotes a product on Instagram and their followers purchase it through their link, the Instagrammer would receive a portion of that revenue.

In equity valuation, residual income represents an economic earnings stream and valuation method for estimating the intrinsic value of a company's common stock. The residual income valuation model values a company as the sum of book value and the present value of expected future residual income. Residual income attempts to measure economic profit, which is the profit remaining after the deduction of opportunity costs for all sources of capital.