AutoCAD Expert's Visual LISP: Release 2019 Edition.

I'm a huge fan of this author. His vLISP books are extremely well structured, thorough, and correct. His subject matter expertise and passion for the subject are undeniable. This is an essential reference for intermediate/advanced vLISP developers to reach the next level. I can't recommend this book enough. Get his AutoCAD 2021 VS Code Update kindle book to supplement this book as it's the definitive reference for the Autodesk VS Code AutoLISP extension.

I found the AU 2012 session "LISP your MESH to Shape!" and was amazed - how the author explained quite complicated issues to the reader and spectator in his video lessons! Than I decided to buy his (printed) book. Although there is no index at the end of the book I'm satisfied.

Great book with many valuable tools.