If you don't lay a good foundation, you may not find the idea of solving the problem, or even if you find the idea, you may make a calculation error. However, if this book is used as the material to open the way of solving mathematical problems, you can try to read it, because the summary of the types of questions and methods of solving problems in the book is quite perfect, and many questions give a variety of methods of solving problems.
Therefore, this book is helpful to the development of mathematical problem-solving ideas.