Publishing platform Smashwords (the largest distributor of ebooks) has added my book Art Histories to its Premium Catalog.
The book explains ideas and curious nuances of numerous works of art. I do believe that understanding art will make the world better and therefore the book is free.
You can download the book in various formats from Smashwords, Barnes & Noble, Kobo, App Store, Scribd. Below are the direct links to pdf and epub versions.