PR can improve your memory if you choose to. You can PR a number of memory book (PR select a few and pick which one/s you want to activate) if you want to improve your memory. People who read have better memories than people who don't so more actively reading can enhance your memory. Having a good memory starts with deliberately noticing stuff or paying attention.

The mega memory course teaches you to associate things you want to remember with (memory) pegs. These courses cannot be compared to the Photoreading course. Photoreading gives you the skills to select the books you want to read and learn from faster. You can learn the mega memory techniques from a book. (I found it useless cause it took more work remembering the pegs than it took me to remember stuff my own way)

Alex