The post discusses a resource called 'The little book about OS development,' which is praised for its informative content on operating system creation. Users express enthusiasm for the challenges of OS development, reminiscing about their own experiences, such as creating boot loaders and interacting with hardware. However, there are concerns regarding the book's GitHub repository, noting its inactivity and the need to address open issues that have remained unresolved for a long time. Overall, the book is seen as a valuable starting point for aspiring OS developers, despite some maintenance shortcomings.