In this introduction we discuss some basic genetic tools and techniques that are used with the fission yeast  Schizosaccharomyces pombe  Genes commonly used for selection or as reporters are discussed, with an emphasis on genes that permit counterselection, intragenic complementation, or colony-color assays.  S. pombe  is most stable as a haploid organism. We describe its mating-type system, how to perform genetic crosses and methods for selecting and propagating diploids. We discuss the relative merits of tetrad dissection and random spore preparation in strain construction and genetic analyses. Finally, we present several types of mutant screens, with an evaluation of their respective strengths and limitations in the light of emerging technologies such as next-generation sequencing.