Selling information to create passive income online

Selling information is another lucrative selection. There are so many stuff people want to understand and they breakers the Net to find this information. In basis you are a skilled at something at all, you could forever write an e-book or a series of e-books and plug them online. Here too, your work would be one time; the time and exertion you fritter in copy the book and packaging it so it cannot be downloaded without your knowledge (and due payment). Once this is done, you could vend your e-book to as many people as you have order it, thus creating a refine supply of passive income online.