To best understand how to work with Odoo, we will build our exercises around a real-world case study. Silkworm is a mid-sized screen printer that manufactures and sells T-shirts, as well as a variety of printing projects. Using Odoo's modular design, we will begin by implementing the Sales Order module to set up the selling of basic products. In this specific case, we will be selling T-shirts. As we proceed through this book, we will continue to expand the system by installing additional modules.