: This is the primary "manual." It includes searchable sections for every tool, including Surfaces, Alignments, Corridors, and Pipe Networks.
: The Montana Department of Transportation provides a free public user guide (Course 202) for Civil 3D Fundamentals, which includes practical hands-on exercises, tips, and best practices for infrastructure design. Core Topics Covered in Civil 3D 2022 Manuals autocad civil 3d 2022 manual pdf
The most authoritative source for the 2022 release is the official Autodesk documentation. : This is the primary "manual