e/sup +/e/sup -/ annihilation

Gives information on properties and limitations of storage ring machines and about the basics of experimentation. Then the results of QED tests in the purely leptonic channels are presented. The author presents information on hadron production at higher energies where jet-phenomena are important with emphasis on three jet events and their relations to some basic properties of QCD. The recent searches for new particle thresholds are reviewed and an account is given of some of the decay properties of heavy quark-antiquark resonances. The new field of photon-photon collisions where very little was known until very recently is briefly covered with discussions of C=+ resonance production and hard scattering phenomena. (151 refs).