  These lectures constitute a short course in `Beyond the Standard Model' for
students of experimental particle physics. I discuss the general ideas which
guide the construction of models of physics beyond the Standard Model. The
central principle, the one which most directly motivates the search for new
physics, is the search for the mechanism of the spontaneous symmetry breaking
observed in the theory of weak interactions. To illustrate models of
weak-interaction symmetry breaking, I give a detailed discussion of the idea of
supersymmetry and that of new strong interactions at the TeV energy scale. I
discuss experiments that will probe the details of these models at future pp
and e+e- colliders. [Lectures presented at the 1996 European School of
High-Energy Physics.]
