Three-dimensional geomechanical models have seen a rapid increase in use by the oil and gas industry, with applications from drilling to reservoir management. Yet few university programmes include applied geomechanics as part of their curriculum. This course aims to fill this gap and presents currently available methods to build, calibrate and interpret 3D and 4D geomechanical models. The course participant will become comfortable with stress and strain tensors, understand the basics of deriving elastic and strength properties, learn how to use seismic data to build geomechanical models and understand the importance of calibrating geomechanical models with observations.