Atomic Orbitals, the Functions and Their Shapes, Tpes of Orbitals, Basis Sets. Molecular Orbitals (Md). Overlap Integrals. Mo'S Symmetries of and Types. Mathematical and Structural Construction of Mo. Introduction to Pmo. Application of Pmo in Construction of Mo. Symmetry and Character Tables. Using Symmetry in Construction of Mo. Building Mo of Fundamental Fragments and Using Them for Construction of Mo for Larger Systems. Hybridization. through Space and through Bond Interactions. Basic Usage of the Gaussian Software. Building a Z-Matrix, Reading the Output.