Books like Singing for Dummies
Pamelia S. Phillips
Singing for Dummies is 368 pages, about 6 hours 45 minutes at 250 words a minute.
8 books to read next
How long each takes
Ganamrutha Varna Malika 2.2 h 
The Diagnosis & Correction of Vocal Faults 3.9 h 
Adventures in Singing 5.7 h The Voice of the Mind 6.7 h 
Training Tenor Voices 3.2 h 
Basics of Vocal Pedagogy 5.7 h 
Complete Handbook of Voice Training 4.7 h The Foundations of Singing 2.2 h Bar height shows length. Estimated at 250 words a minute.