This is a small book written by matador Diego O' Bolger, now hard to find, but popular in the 1980s. It was sold at bullfights in Nogales and Tijuana.
Though unspectacular, the book does offer a simple explanation to the phases of the bullfight and enables people watching a corrida for the first time to understand what is going on.
For serious aficionados, there are and were more detailed and better books out there.
John Fulton's book on bullfighting which is also out of print, with Fulton long deceased, is a far better book on bullfighting written by an American matador.
O' Bolger took the alternativa in Tijuana in 1968. He is presently retired and living in Tucson. During the 1970s and 1980s, he had many triumphant corridas on the border, especially in Nogales.