それは、私のような初心者にはとても役立つ良い内容でした♪ (That was very useful and a good content for beginner like me ♪) プログラミングの上級者には少し物足りないかもしれませんが、買って損は無いと思いました♪ (The senior person of the programming may feel a little unsatisfactory , but I thought that buying the book is not loss ♪)