The way Lisp began: http://paulgraham.com/rootsoflisp.html
A guide to the Bel language: https://sep.yimg.com/ty/cdn/paulgraham/bellanguage.txt?t=157...
The Bel source: https://sep.yimg.com/ty/cdn/paulgraham/bel.bel?t=1570864329&
Some code examples: https://sep.yimg.com/ty/cdn/paulgraham/belexamples.txt?t=157...