I don't take notes, typically. Nor do I highlight. But I look up every single word that I don't know. And I frequently look up the etymologies of words as well. This practice has improved my vocabulary immeasurably. Also, I concentrate when I read so that I comprehend what I am reading. Sometimes I will catch myself scanning without internalizing. I will then reread what I glossed over so I capture the meaning of the sentence or paragraph. 

DiedOnTitan

Reading is key for sure! Do you highlight or take notes when you read?

BTCFC

alter_native

How do you optimize your learning?

Reading is key. Reading high quality material accelerates learning. You get decades of an author's knowledge and experience condensed into a few hours of focused reading. I can feel my brain and spirit growing when reading good stuff. Optimize your learning by reading great books. Full stop.