The present book includes chapters on history of mycology, as well as on fungi morphology, growth, physiology and reproduction. The other chapters cover the details ecology of fungi, classification and systematics. The book includes questions, tests and variants of laboratory works. The book has been written to cater to the needs of Undergraduate and Postgraduate students of East-African Universities. Author expresses the confidence in usefulness of the compendium for future professionals activity in the field of fungal biotechnology.