Primer on the Gene Ontology
  The Gene Ontology (GO) project is the largest resource for cataloguing gene function. The combination of solid conceptual underpinnings and a practical set of features have made the GO a widely adopted resource in the research community and an essential resource for data analysis. In this chapter, we provide a concise primer for all users of the GO. We briefly introduce the structure of the ontology and explain how to interpret annotations associated with the GO. 
Pascale Gaudet, Nives \v{S}kunca, James C. Hu, Christophe Dessimoz
q-bio.GN