There are many free template eBook for you to start writing a Book. Just search for them in the Internet. Here is one informative video from Jason Whaling. He is using Canva.
MacBook has photo album, which you can easily convert into eBook. I have the older version of Mac and I have (incomplete) two Albums on the rack. It contains a combination of my favourite pictures and poetic words.
I plan to convert Muqaddimah into a shorter, simpler version of eBook. The purpose is to encourage people to read. More importantly, read Muqaddimah. So far, I have the title of the eBook: IqtiStory. A combination of Iqtisad + Story. Iqtisad means Economics. Muqaddimah means An Introduction.
On the other note, have you seen the trailer for MasterClass with world's well-known instructors? It will cost you USD180 and was introduced in 2015. It was part of MOOC (massive open online courses). The Instructors are international stars like Serena William, James Patterson, Jeffery Archer, Anna Wintour and Gordon Ramsay.
There are fields such as game design with Sims creator Will Wright; economics with Nobel laureate Paul Krugman; and space exploration with Chris Hadfield. Check it out in this article.
Pic. Some of the Instructors for MasterClass