If you are looking for a fun way to learn the basics of AutoCAD, then this free online document is perfect for you. Learning any professional CAD application can be challenging so Autodesk has created a great deal of learning resources including this guide developed in the past 2 years. The title was based on the popular science fiction novel by Douglas Adams “Hitchhikers Guide to the Galaxy”’ but you journey through most of the core basics of AutoCAD.