This set of notes was compiled in order to assist the geophysicist about to enter into the realm of space physics for the first time. Subjects such as Properties of a Neutral Conducting Fluiding, Equations of Plasma Physics, Hydro magnetic Waves, Motion of Charged Particles in Certain Force Fields, and Adiabatic Invariants, and treated. Prerequisites for understanding the material are a working knowledge of Maxwell's Equations, some familiarity with Lorentz transformations, and the basic principles of classical mechanics.