I’m still a big fan of InfoBarrel, Eric, even though I haven’t been able to write much. With what I am earning there, I’ve actually shifted to outsourcing quite a bit of content…call it a “respite” from writing, I had just needed a break. Even if one pays $5-$10 per article, IF the keywords are researched properly and effectively, one can easily turn that one article and earn several hundred off of it in it’s lifetime. Right now, one of my friends had written a single article that, already this month, has earned over $83 on InfoBarrel. Not too shabby at all…
Inspired by you, I started a tax/personal finance a month ago. I figured if it works out, it will create a good side income for me. If not, at least I can use the blog to build my brand as a tax lawyer. Other than that, my current investment portfolio is heavily focused on index funds because of its historical performance and tax & cost efficiency. Right now my dividends income every year is about $14,000. I also have a good amount of unrealized capital gains every year from my investment, though I don’t count the capital gains as my passive income as they are paper gains, at least for now.
I formed a publishing company a number of years ago and have published a couple of technical books I’ve written since then. I doubled my goal for copies sold, but it’s definitely not enough income to retire on. Writing books is a tough area. You’ll definitely be proud of the accomplishment and seeing the sales happen around the world, but it’s tough to make it really profitable.

2) Find Out What You Are Good At. Everybody is good at something, be it investing, playing an instrument, playing a sport, communications, writing, art, dance and so forth. You should also list several things that interest you most. If you can combine your interest plus expertise, you should be able to monetize your skills. A tennis player can teach tennis for $65 an hour. A writer can pen her first novel. A finance buff can invest in stocks. A singer can record his first song. The more interests and skills you have, the higher chance you can create something that can provide passive income down the road.
In addition to opening a brokerage account, you can also invest in peer-to-peer lending firms like Lending Club. I’ve been using Lending Club for a few years, and my net annualized return was 6.02% percent last year. Picking the right investments is easy since the platform offers automatic investing, but you can also pick your own notes if you're brave and want to learn the best ways to leverage the Lending Club platform.