Let me recommend to you "Peopleware: Productive Projects and Teams" by Tom DeMarco & Timothy Lister (go with the 3rd edition) and "The Mythical Man-Month" by Frederick P. Brooks Jr. (go with the anniversary edition). Both books expound the idea that most software projects fail not because lack of technology or innovation, but rather due to the mismanagement of people and a lack of understanding how teams work.
I haven't read the 2nd one, so I should have just said that read the latest that you can. The main contents can feel quite dated for any edition, but there have been updates to fit the times that I'm not sure are in earlier editions than the one I read (i.e. the 3rd edition).
