Books like How to Increase Your Intelligence
Win Wenger
How to Increase Your Intelligence is 144 pages, about 2 hours 38 minutes at 250 words a minute.
12 books to read next
How long each takes
The Shallows 5.5 h 
The Mind Map Book 5.9 h 
The Idiot Brain 6.2 h 
A Thousand Brains 5.3 h 
Broca's Brain 7.3 h 
The Astonishing Hypothesis 5.8 h 
On Intelligence 4.8 h 
Head First! 4.7 h 
Hare Brain, Tortoise Mind 5.0 h 
Psychology 15.0 h 
The Developing Mind 7.2 h 
Maximum Brainpower 5.2 h Bar height shows length. Estimated at 250 words a minute.