Affiliate programs are the current hot thing in monetising websites. The basics are that retailers like Amazon will pay you a percentage if you send someone to their website to buy something. The percentage ranges from around 3% with sites like Amazon all the way up to 60% or even higher for information products sold by other people looking to make passive income. 
My favorite type of semi-passive income was rental property because it was a tangible asset that provided reliable income. As I grew older, my interest in rental property waned because I no longer had the patience and time to deal with maintenance issues and tenants. Online real estate became more attractive, along with tax-free municipal-bond income once rates started to rise.
Based on my initial experience of passive income, I feel real that real estate is best vehicle to build long-term investment. I live in Los Angeles and was able to cash flow my first rental property. What are you thoughts about starting out to build a passive income portfolio? I have utilized Lendingclub, online savings, and a small dividend/bond portfolio.
At some point in every value chain, value has to be created by a real human. No argument there. However, who says that a human has to deliver that value? Some very smart humans put in the work to create Google, but for the most part, they don’t have to do any work to deliver value to you, whether it’s search results or GMail or Maps. Your landlord put in a lot of work to afford the apartment you live in, to remodel it, and even to find you as a tenant. But now, he doesn’t have to do any work to deliver value to you: you wake up every morning in the apartment whether or not he works.
Software is one of the most lucrative passive income streams but most online entrepreneurs shy away from it, mainly because of the technical aspect that is involved. The truth is that you don't need programming skills to build a software; the whole process can be outsourced fairly easily. You do need to know how to pick a good developer and, of course, have a winning idea that customers are willing to pay for.
5) Determine What Income Level Will Make You Happy. Think back to when you made little to no income as a student. Now think back to the days when you just got started in your career. Were you happy then? Now go over every single year you got a raise or made more money doing something else. How did your happiness change at all, if any? Everybody has a different level of income that will bring maximum happiness due to different desires, needs, and living arrangements. It’s up to you to find out your optimum income level.
A freelancing service is something that can, with the right strategy and action, turn into something more productized and passive. Brian Casel, featured guest on SPI Podcast Session #158, talks about how he was able to turn his stress-inducing one-on-one design service business into something that was actually more productized, passive, and profitable. I highly recommend you listen to that episode if you have a service-based business and you feel stuck.
* I use Personal Capital to track all my finances in one place. It’s much easier to use their free software to follow 28 accounts on one platform than to log into various accounts to check my balances. They’ve also got great tools for x-raying your portfolio for excessive fees, recommending a more optimized asset allocation, and planning for retirement with their Retirement Planner.