This book is suitable for Kindergarten - 2. It's about the inspiring of Grace Hoper. Naughty girl page recommended this book to me. Although I am an adult, but this book is still good. Sometimes, the bug in your program is not a visual bug, not by algorithm, syntax error but is a real bug, an animal. HEY!!! You should borrow it because it is free and interesting. I would be happy to lend to you!