The discussion highlights the effectiveness of certain study guide books, particularly the Schaum series, for students preparing for exams. While these books are praised for their practical approach and ability to enhance problem-solving skills, they are not recommended as primary texts for deep theoretical understanding. The series focuses on hands-on learning, presenting minimal theory alongside detailed worked-out problems and practice exercises. They serve best as a supplementary resource to theoretical courses or for students looking to refresh their practical skills after a period of study. Overall, they provide valuable support for exam preparation but should be used in conjunction with more comprehensive theoretical materials for a complete understanding of the subject matter.