Learning kanji is extremely important for students of the japanese language. This book is very good for reference. Each character is arranged especially for beginners, with more simple and common kanji at the beginning and more complicated kanji at the end. There is also an index at the back where you can find kanji by pronounciation as well as by stroke order. When you find the character you are looking for, there is detailed information about the stroke order, how to remember the character, kun and onyomi pronounciations and compound kanji.
Despite the wealth of information this book contains, it is VERY compact and is easy to carry around. Overall, a fantastic book!