The beginnings of Peter Seibel's new Lisp FAQ look promising. (The staging FAQ might be worth checking out, too, especially if you would like to provide feedback on questions and answers as they're being developed.)

I'm glad that the driving force behind this is the guy who wrote a book about Lisp with the word “practical” in the title. There don't seem to be canonical FAQs these days quite in the same way there were 10 or 15 years ago, and there have been several failed attempts before this to create an updated Lisp FAQ, but I'm hoping this one succeeds.