The phrase "first ebook" refers to the initial or very first digital book that has been created or published electronically rather than in printed form. Full definition
The PRS - 900 was available for purchase in the United States only, and was Sony's first ebook reader with any kind of wireless capabilities.. (the-ebook-reader.com)
In 2015, traditional publishers started using indie author tactics, such as running sales on first ebooks in series and discounting backlist titles. (lindsayburoker.com)
Hey Guys, I recently put my very first eBook on Amazon in November. (trainingauthors.com)