- Practical Common Lisp - Land of Lisp - http://landoflisp.com/ - watch the video, it's hilarious - Build Your Own Lisp - http://www.buildyourownlisp.com/ - Learn C by creating a lisp in C - In the spirit of making your own lisp, I would recommend https://github.com/kanaka/mal - learn any language, by making a lisp in that language
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