For memory techniques, including memory palaces, I can recommend "Quantum Memory Power" by Dominic O'Brien. He was (is?) a world champion at memorization, and

For memory techniques, including memory palaces, I can recommend "Quantum Memory Power" by Dominic O'Brien. He was (is?) a world champion at memorization, and does pretty well at presenting in his audio book. Some of it feels a bit out of date (e.g. popular names he uses to help with memorization), but if you can get past it there's a lot to learn. "Tricks of the Mind" by Derren Brown also has some basic information on memorization, along with a host of other interesting topics.