 He studied in schools of Government in San Luis Potosí, and after the death of his father in 1948, the Government offered scholarships to the children of deceased firefighters so that they could study in any school.Del Castillo was a rebellious youth, and on the instructions of his mother, in 1952 joined the Mexican seminary for foreign missions in Mexico City and was a member of the Congregation of the missionaries of Guadalupe, priestly studies that abandoned in 1953.Not knowing what to do with his life, Del Castillo thought at some time studying medicine.