I liked this book on memory and remembering by Dominic O'Brien. I have been a fan his since hearing about and managing to get hold of a copy of, How To Develop A Perfect Memory (out of print), and How to Pass Exams.
Learn to remember, is an introduction to what is discussed in more depth in the earlier two books. He does not go into as much detail about his DOMINIC system in this text, which although beautifully presented, may leave some readers wanting for detail.
If you can, I would recommend that you also try and get hold of his Linguaphone course, which is four books and twelve cassettes long. This will fill in the gaps left by 'Learn to Remember'.
My recommendation is to buy this book as an introduction to Dominic O'Brien, and the very exciting prospect that you too possess a perfect memory but have just never been shown how to use it properly