Most programmers think that writing code is enough to be useful for a software project. It's not true, especially now, when projects are becoming smaller and teams are more distributed. A modern programmer must understand all the processes and phases of a software development lifecycle. The best way to learn them all, if you ask me, is to study the Rational Unified Process (RUP).

The video is here: https://youtu.be/Af0E8Bn8qcw