“Sams Teach Yourself Visual Basic 6 in 21 Days” by Greg M. Perry is a comprehensive textbook designed for those looking to learn programming with Visual Basic 6. Published by SAMS in 1998, this text is part of the Teach Yourself Series and covers the subject in a clear and accessible manner. With 880 pages of content, this trade paperback is an essential resource for anyone looking to enhance their programming skills in the Visual Basic language.