This is the only math tool that actually reached me!<br><br>There are one or two videos and short reviews for every page to help you retain/learn.<br>Each video is in-depth yet easy to understand.<br>The author is very warm and encouraging which also helps, I recommend reading the short introduction pages and working on the problems in the recommended order<br>This book helps make math feel like a fun challenge vs an impenetrable wall.<br>Thank you for making this book!