This was quite a short book, which wasn't too hard to remember, full of mnemonics and techniques to help me remember things, some of which put me in mind of stuff I read earlier this year in Have You Eaten Grandma? by Gyles Brandreth.
I enjoyed the book as it was very humourous, although I kept remembering that there was interactive stuff so I kept having to run into the other room to get a pen. I should probably have read it all in one sitting too, rather than several small readings when I had the time - I struggled when the book tested me on everything I read so far.
I'm going to try their technique for remembering dates, though.
Next book: Feel Free by Zadie Smith