Why choose e books in today's world? It simply because it is easy access, downloadable, shareable, and people could make money selling or reselling e books. There are many topics out there have been shared using e books. Now, everyone can has their own e books or in other word, write their own e books but you must know what topic that people want to read. Writing the topic you like will might not bring you anywhere because to make profit from selling e books, you must have readers and you must write what readers what to read, not what you want to show them.
Today. you can learn to write e books. This is opportunity to know the right way to write e books and the right method to promote and to sell it. In addition you need to learn how to accept payment and to be more advance, you must know to create a great website and create an affiliate program.
So, don't delay, Get know more about writing, promoting and selling e books.
Good luck and enjoy.