Books Are Essential
As an adult educator with over 25 years of experience I find that the trend toward the technical aspect in teaching is indeed fast paced and has its merits; however, a book in a student's hands is essential for learners who have difficulty with concentration, are hyperactive, or are in need of continued reinforcement. Many students do not have on-line access and a book continues to be the best answer.
This used book will serve a very worthy adult education student.