Passive Income means that you don’t have to actively work for it. In other words, these are not your earnings from primary job but from investments such as Real Estate, Bonds, Stock dividends etc. It is a regular income that doesn’t require much effort.
I first heard about Passive income in the book called Rich Dad, Poor Dad (highly recommended for starters). I’m not a Robert Kiyosaki fan by any means. Perhaps I was in the beginning as his books gave me enough motivation to map out a definite plan for financial freedom. We all need different level of teachers, mentors at various stages in our lives.