This document provides an overview of nuclear magnetic resonance (NMR) spectroscopy techniques, including 1D NMR, 2D NMR, COSY, NOESY, INADEQUATE, and HETCOR. It discusses the basics of NMR including chemical shifts, spin-spin coupling, and coupling constants. It describes how 1D NMR can provide information about molecular structure but has limitations for complex molecules. 2D NMR techniques are introduced as a way to obtain additional structural information by introducing a second dimension to the NMR spectrum.