I find it highly effective for retention and understanding to talk with someone about what I'm reading, as I'm reading it. If I just read a chapter from a book

I find it highly effective for retention and understanding to talk with someone about what I'm reading, as I'm reading it. If I just read a chapter from a book on Austrian Economics about how profit/loss signals in a market allocate resources more efficiently than a planning board, I'll bring it up with my friend next time we talk. As they ask questions I'm forced to deepen my own understanding of the topic by answering them.