<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> Drawing on examples from various areas of physics, this textbook introduces the reader to computer-based physics using Fortran. It elucidates a broad palette of topics, including fundamental phenomena in classical mechanics and dynamic systems, effects in field theories and macroscopic structure formation, Monte Carlo methods in statistical physics, and hydrodynamics.