The aim of this paper is to expound some important results achieved in the last 30 years about the dynamics of celestial bodies in spin-orbit resonance. First, we identify three distinct categories among these celestial bodies and we explain the differences between these categories. Then, we take a more specific interest in the first category that we name: "spin-orbit resonances of first type". For celestial bodies in this category, we remind Goldreich and Peale relations (1966) to evaluate their probabilities of resonances capture and the Chirikov criterion (1979) to predict the presence of chaotic zone in their phase space.