What principles of Guerrilla warfare are introduced in Chapter I of the nonfiction book, General Principles of Guerrilla Warfare?

Guevara gives three lessons of Guerrilla warfare that allowed the Cuban revolutionaries that he led defeat the Batista regime in Cuba: 1) partisans supported by the people can defeat the regular army 2) Guerrilla warfare can create the conditions of the revolution and 3) In Latin America, the revolution should occur in the countryside.