As a software developer, you sometimes have to work with graphics packages. The first time a developer uses visual studio there's a big chance he's dazzled by all the buttons to click. The same goes for a developer taking a first look at a graphics package like blender or gimp.
However if a game developer is able able to use a modelling tool (even if far from skilled as a graphics guru) it gives him an advantage speaking the language of a graphics artist.
On this page I show step-by-step tutorials with many screenshots, aimed at developers.