There are many people out there who have started some types of businesses, affiliate links in blog posts, online courses, or books that do not require any maintenance or any type of work and still bring them money.
This is also known as passive income.
There are also people who are increasing their passive income while talking about ways they have built their passive income. People who go and make courses, or write books: Here is how I built up a 6 figure business and similar titles that you may have probably stumbled upon so far.
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