This is a 2-cent book -- priced just two cents above the minimum price Amazon allows. Greg here, the guy whose name is on the cover, as the assembler not the author. The information here comes entirely from authoritative reference books. I'm a Greek hobbyist. Greek prepositions are hard. I need practice, so I put this study book together for myself. I used it. My Greek got better. Now I'd like the book to do the same for you. Gentle Greek Prepositions is especially arranged to make it quick and easy for you to find each particular idiomatic use of the prepositions you come across as you read ancient Attic and Koine Greek. When I'm reading Greek and working on prepositions, I keep Gentle Greek Prepositions next to me. When I come to a preposition, I decide whether I recognize its idiomatic use in this sentence. If I do, I move on. If I don't, I pick up Gentle Greek Prepositions and use the table of contents on the back cover to quickly find the pages for this word. I flip there and read the entry. I look for quotations illustrating similar idiomatic use of this preposition.