I love this book and I am NOT a math person! It is easy to follow, while learning how to do mental math in your head. I find it pretty fun to do if I’m waiting somewhere for something. Much better than being on my phone. The tricks do need practice, so I keep a note book with it till I learn how to do it in my head. This book is for everyone. The mental tips save you so much time when trying to figure out a problem.