From here onwards it is advisable to have a real chessboard in front of you while reading this book and physically execute each move that is mentioned. In order to become thoroughly acquainted with chess it is necessary not just to familiarize your thought-processes, but also your hands with the actual playing of moves. Reading about chess is fine, but experiencing what it feels like to make a move is better.
If you drop that paragraph into a 'what's the reading age' tool, you get 'hard to read' and '10-12th grade' or maybe college level! https://readabilityformulas.com/freetests/six-readability-formulas.php How many beginner chess players would like something to read before they get to college? It doesn't take much to drop that firmly into the primary school age range (for say, a 9-year-old):
From now on, I want you to play over the moves in this book with a real chess board and pieces. If you want to learn about chess properly, you need to train your hands as well as your brain. Reading about chess is fine, but feeling what it is like to make a move is better.
