The "English KnowHow Workbook Opener" by Gregory J. Manin is a foreign language study publication specifically focused on English as a second language. Published by Oxford University Press in 2004, this workbook features 80 pages of exercises and activities designed to help learners improve their English language skills. With a compact size of 10.9 inches in length, 8.5 inches in width, and 0.2 inches in height, this workbook is a valuable resource for individuals looking to study and practice English in a structured and practical way.