Closing Comments to the Lisp Lesson
Try to familiarize yourself with the functions that are out there to use - Don’t need to remember them exactly, just what sort of thing they do.
Look at other peoples LISP programs to understand what they are doing - almost all AutoLISP code is plain ASCII text
Don’t get discouraged if a program doesn’t run. Try to break it down into smaller chunks to see WHERE it is falling apart.
Use local variables to see what the values are that caused the program to crash