Learn the fundamentals of 3D design using FreeCAD 1.1 with a straightforward introduction to its core features. This book presents computer-aided design concepts in a simple and accessible way, making it suitable for beginners and those looking to improve their skills. Start by installing FreeCAD on Windows or macOS, then explore the interface, navigation, and key workbenches. Create sketches, apply constraints, and turn 2D profiles into 3D models. Move on to assemblies, understand how parts fit together, and produce technical drawings with dimensions and annotations. The book also covers pattern creation, threading, shell operations, and sheet metal tools. Examples show how these features are used in design work and provide an introduction to basic CAM processes. By the end, you will be able to create accurate models and drawings for personal or professional use. Suitable for students, hobbyists, engineers, and designers interested in FreeCAD 1.1 and 3D design.