Focusing specifically on the wastewater treatment process of anaerobic digestion, this document identifies instructional and reference materials for use by professionals in the field in the development and implementation of new programs or in the updating of existing programs. It is designed to help trainers, plant operators, educators, engineers, consultants, and students efficiently identify and locate specific instructional materials. Part I presents a brief description of the anaerobic digestion process in wastewater treatment operations. Part II provides eleven selected chapters or sections from resource publications and other instructional materials which are representative of materials currently available. Part III contains abstracts of other pertinent instructional materials which may supplement those in Part II. The final section alphabetically lists bibliographic citations, mostly from technical and scientific journals, of additional resources which tend to be highly specific and more technical in nature. (Author/DC)