To take this class you must be a paid member fo the BJCP Study Sessions Class. See this discussion for more details:
CLASS 9: PORTERS AND STOUTS – BJCP Categories 12 and 13. Class consists of discussion of history, ingredients, brewing process and characteristics of each style as well as sampling of examples.
1. Strong, Gordon et al (2008). BJCP Style Guidelines. Categories (12 and 13). Retrieved from http://www.bjcp.org/stylecenter.php