Recently, I started to work with PrestaShop for my studies, I've noticed that you need to create a lot of small modules for almost anything in PrestaShop.
To make development easier I've made a module generator, with few clics you can get a complete working PrestaShop module ready to install.
With a bit more of configuration you can get samples for an admin controller, front controller, model and so on.
The tool is completely free, don't hesitate to tell me if there are any bugs or if you want to make suggestions !