Starting from his early teenage years, Musk would read through two books per day in various disciplines according to his brother, Kimbal Musk. To put that context, if you read one book a month, Musk would read 60 times as many books as you.

https://medium.com/@michaeldsimmons/how-elon-musk-learns-faster-and-better-than-everyone-else-a010a4f586ef