RE: https://fosstodon.org/@interlisp/115643739371363748
If you always wanted to try out a Lisp Machine environment, but felt overwhelmed and didn't know where to start, the Medley Interlisp primer is for you.
The primer gently guides you into using the system and developing simple programs, even if you have no prior knowledge of Lisp. Plus, as the document also explains, you can run the actual environment.