In this OpenFOAM® tutorial series, we have prepared fourteen case examples that are designed to help users to learn the key utilities and features within OpenFOAM®, including mesh generation, multiphase modeling, turbulence modeling, parallel processing and reaction modeling. The base tutorial examples can be imported directly from the OpenFOAM® installation directory. The tutorials should be primarily used for OpenFOAM® versions 7.0 and v1906, with differences in the running procedure between v1906 and 7.0 highlighted in blue boxes. So, simply ignore the blue boxes if you are running in version 7.0! The structure of each case example follow the below general structure: Background: an introduction about the key topics explored in the tutorial and the relevant CFD theory 1. Pre-processing: instructions on how to set up the correct case structure for a given problemusing base case tutorials, with explanations on relevant dictionaries 2. Running simulation: instructions on running the solver and its associated commands 3. Post-processing: examining the results in OpenFOAM®’s post-processing application, ParaView V5.6.0