I'm going to recommend 3 books for you.
Don't Make Me Think is a very brief (each page is like a paragraph), funny introduction into the UX mantra. It gives you a more holistic view of the people using your product, instead of focusing narrowly on just the product itself. You can read this book in one short afternoon.
The Inmates are Running the Asylum is incredible and just the book you're looking for. It's written by Alan Cooper, the guy who created Visual Basic and wrote the prominent book, About Face. He talks about the struggle of a project manager dealing with software developers. He basically makes really pointed jabs at them that'll carry with you for the rest of your life. You can use this book to teach your programmers really common sense stuff. Please make the effort to read it all the way to the end, because that's where he really finds his groove and it gets interesting. The whole thing is pretty interesting.
Sketching User Experiences is another pretty quick read, but I'm going to recommend The Inmates are Running the Asylum as more important if you have to pick one. Sketching User Experiences basically describes how to effectively communicate design ideas and can help you get a sense of design culture. The ideas are really fascinating, too, like how you should propose more than one idea so you and your team can work on deciding the best option, not about me vs them. And how you should present ideas as really rough and crappy looking sketches, showing you're not too committed to the idea and it's ok to criticize. (I basically summed up the important parts of the book for you).