The book I read to research this post was Mind Mapping Secrets For Business by Katie Darden which is a very good book which I bought from kindle. This book is quite short but succinct and is informative on this topic. Apparently Katie has taught mind mapping to students so does seem to explain it quite well. The British psychology author Tony Buzan came up with the idea of mind mapping and was inspired by ideas in science fiction novels of a technique of showing relationships between things and doing it in a visual way. A mind map typically will have a photo or picture in the centre showing the key subject and will have wider branches coming out of the centre narrowing as you go further out. The key thing is for it to be visual and pictures tend to be used to symbolize things along with keywords running along many of the branches. Many people use software to do mind maps and they certainly make it neater and are especially good for the beginner. This book does promote freemind a free open source mind mapping software and even includes how to install it. There is a whole list of free mind mapping software in the book. Some applications mind mapping is particularly good for are SEO, website design, planning your day, studying and revising and anything where you need to plan out your thoughts. Everything in a mind map is put in categories so that you don't miss anything out. The human brain can remember between 5-9 items in any one go and this retention improves if the items are put in groups or any kind of logical order. Another technique is of course mnemonics where you come up with a sentence that the first letter of each word represents an item. I thoroughly enjoyed this book and would probably read other books by this author and think it is a pretty good book if a little bit short.