This isn't the type of ATLAS that has maps in it. This is the type of atlas that has tables, illustrations, some maps that are more illustrations than useful guides, charts and a bit of superficial half-summaries of places and events under headings. This book is pretty but there is nothing of substance in the contents. If you haven't read the Silmarillion, or the Appendices to the Lord of the Rings you will be lost and confused. If you have read those works, then this book will provide nothing new. It isn't particularly useful as a guide either. David Day also tends to be liberal (and sometimes inaccurate) with his interpretation of some aspects Tolkien's works . A thoroughly disappointing offering.
If you want maps, try Atlas of Tolkien's Middle-Earth by Karen Wunn Fonstad and Journeys of Frodo: An Atlas of J.R.R. Tolkien's The Lord of the Rings by Barbara Strachey.
Also interesting is Exploring J.R.R. Tolkien's The Hobbit by Corey Olsen and
Making of Middle-Earth by Christopher A Snyder.
Or use this interactive map: