The fundamentals of the theory of random closed sets in the Euclidean
space of an arbitrary dimension d are presented and the selected chara
cteristics of random closed sets are introduced. Namely, Choquet hitti
ng functional, contact distribution functions, covariance and set cova
riance, K-function and pair correlation function. Further, the most im
portant models of random closed sets are described and shortly discuss
ed, in particular germ-grain model, Poisson point process, cluster fie
lds, hard-core models, lattice models, Boolean model, Poisson hyperpla
nes etc.