Books: The Mythical Man-Month: Essays on Software Engineering
The Mythical Man-Month: Essays on Software Engineering by Frederick P. Brooks Jr . was the book that opened my eyes on software engineering planning when I was asked to manage the team of developers back in the 2007. It's a really deep dive into imperfectness of the man-month approach of planning in the software development that is actually leads us to the idea of an agile development process.