This book gives a general overview of Grand Unification Theory (G.U.T.). GUT is a theory that is modeled around The Standard Model of High Energy Particle Physics. The strict form of GUT seeks to model the combination of three out of four of the currently observed fundamental forces into a single force. GUT tries to unite the electromagnetic, the weak and the strong force into one theory or model. If all three of these forces are then united with gravity, this is regarded to be a Theory of Everything (T.O.E.). In this perspective, Grand Unification Theory is an intermediate step towards producing a Theory of Everything. This is one of the ultimate goals of math, physics and cosmology.