1. Postulates of Quantum Mechanics. Dirac¿s matrix formulation. Observables and operators. Eigenvalues and eigenvectors. Discrete and continuous basis. Spectral decomposition. Temporal evolution of quantum systems. Density matrix. 2. Theory of angular momentum. Orbital angular momentum. Electron spin. Spin-orbit interaction. Stern-Gerlach experiment. Zeeman effect. 3. Approximation methods in Quantum Mechanics: perturbative and variational methods. 4. Introduction to light-matter interaction. 5. Multi-electronic atoms. Pauli¿s exclusion principle. Hartree¿s theory and the periodic table. 6. Introduction to Molecular Physics. Born-Oppenheimer model.