I don't speak the language but I'm a Lisper, so I'll try deciphering this. What is Common Lisp / Materials about CL / Setting up Emacs / Setting up Quicklisp /

I don't speak the language but I'm a Lisper, so I'll try deciphering this. What is Common Lisp / Materials about CL / Setting up Emacs / Setting up Quicklisp / Setting up Slime / Relevant links / Appendix: Irrelevant links (: There is also a link to what they call an official Telegram group.