Concepts in particle physics : a concise introduction to the standard model The Standard Model Review of special relativity Quantum mechanics and the propagator Scattering processes and Feynman diagrams Photons and the electromagnetic field Processes with photons Cross section and dimensional analysis More on the Dirac equation Other forces: weak interactions The gauge principle Tthe gauge principle II Gauge symmetry: the matrix generalization Gauge symmetry: the matrix generalization II Back to particles and the strong nuclear force More on quantum chromodynamics (QCD) Mesons and baryons Spontaneous symmetry breaking Superconductivity and weak interactions Weak interactions and the story of mass CP violation and matter vs antimatter Many big questions remain The 2013 discovery of the Higgs boson posed a challenge to both physics undergraduates and their instructors. Since particle physics is seldom taught at the undergraduate level the question what is the Higgs and why does its discovery matter is a common question among undergraduates. Equally answering this question is a problem for physics instructors. This book is an attempt to put the key concepts of particle physics together in an appealing way and yet give enough extra tidbits for students seriously considering graduate studies in particle physics. It starts with some recapitulation of relativity and quantum mechanics and then builds on it to give both conceptual ideas regarding the Standard Model of particle physics as well as technical details. It is presented in an informal lecture style and includes remarks sections where extra material history or technical details are presented for the interested student. The last lecture presents an assessment of the open questions and where the future might take us