This is intended to be used as a starter’s guide into the realm of 3D printing, one of the most revolutionary technologies of the 21st century. 3D printing is has brought about the concept of ‘personal manufacturing’, because of the option of customization that it brings to the consumer directly. Through this resource, we will try to understand what is additive manufacturing i.e. 3D printing, how it works, process, materials, how to design 3D models using various Computer Aided Design (CAD) software like TinkerCAD, how to 3D print and its applications.