About the AutoSoftKey PDF Library
Original learning resources for designers, engineers and project teams—clearly separated from any software-licence store.
Last updated: 30 August 2026
Independent educational publishing
The AutoSoftKey PDF Library is operated by Cadunlock LLC. The PDF Library offers original downloadable learning guides about professional design and engineering workflows. The aim is practical reference material: structured explanations, checklists, examples and troubleshooting notes that can be kept close to a project.
How guides are prepared
Before a guide is placed on sale, we check its file integrity, page rendering, table of contents, internal links, readability, stated edition, product description and core workflow content. Software changes over time, so every product page identifies its edition/update date and customers should verify safety-critical or production-critical decisions against current official documentation.
Clear product information
Each listing states the topic, format, language, intended audience, approximate page count, edition/update date, price in GBP, delivery method, access limits and what is not included. Purchases are one-off and do not renew automatically.
Trademark and affiliation notice
Autodesk and individual software names are trademarks of their respective owners. They are used only to identify the independent educational topic. Cadunlock LLC and AutoSoftKey are not affiliated with, sponsored by or endorsed by Autodesk, Inc. Official publisher documentation and software are not included.