If readers wanted to find “My Mother Was Nuts” in a bricks-and-mortar store, or simply stumble upon it, the way some books are discovered, they would be hard-pressed to do so. The memoir wasn’t stocked in any of the almost-700 Barnes and Nobles stores across the country, nor in Wal-Mart or Target stores. Most independent booksellers don’t stock the book, and the e-book version wasn’t carried by stores operated by Sony, Apple, or Google. Just about the only place a reader is guaranteed to find the memoir is at Amazon.com.

Amazon struggles to get its books onto the bestseller charts