Very useful and interesting ideas. To make a passive income is not an easy task as someone may say. It requires responsible approach and a lot of effort.I, personally, think of generating revenue from rental properties. And I was considering Queens in NY. However, I hadn’t even thought about trying index funds before your post, but now I believe it might be a good idea. Thus, thank you for sharing.
As a kid, I loved reading and being able to choose a new book from the library was the highlight of my childhood. Then something changed, I got to high school and college and reading felt more like a chore. I was rarely reading, except for the occasional blog or required textbook for school. Even after graduating, I never picked up a book much, especially about finances!

As to copyrights, there are various ways to minimize the likelihood of theft of your work, but none are foolproof. But rest assured that if someone were to reproduce the work under their own name, they’d face legal action. It would be obvious if they were selling the work on a widespread basis. It’s amazing the information that’s making it around the web. Theft on a large scale has a way of being discovered.

When money is lent to a partnership or S-corporation acting as a pass-through entity (essentially a business that is designed to reduce the effects of double taxation) by that entity’s owner, the interest income on that loan to the portfolio income can qualify as passive income. According to the IRS's Passive Activity and At-Risk Rules: "Certain self-charged interest income or deductions may be treated as passive activity gross income or passive activity deductions if the loan proceeds are used in a passive activity."