In this Introduction to Computer Aided Design, you will find a set of topics with a systematic content ("How to" short videos, a "vade mecum" of best practices, an assignment with the 3D models required to achieve the tasks, and further tutorials to carry on your learning of CAD fundamentals). The CAD modeller PTC Creo Parametric was used to create most illustrations (videos, photos, files, etc.), so you should better stick with CREO to practice, but some aspects, such as "vade mecum" are software-agnostic, that is, you can apply the tips with any CAD software (Catia, Solidworks, etc.). Each topic ("Solid Modelling", "Assembly Modelling", etc.) are independent of each other, but if you are new at CAD modelling, you should better follow the topics linearly from top to bottom.