If you're interested in Clojure, I _highly_ recommend /r/Clojure on Reddit. It's very active; several library devs, book authors, and core maintainers frequently post and comment. There's a weekly thread dedicated to new Clojure users ([Latest thread here][1]). The Clojure Slack[6] is even more active if you have a burning question.

If you would like to dip your toes in the water, 4Clojure[2] is an online interactive Clojure Kata. There's also a (nearly) full REPL environment at Try Clojure[3] or repl.it[4]. The Clojure Cheatsheet[5] makes it easy to browse and discover the Clojure standard library, and IMHO is _so_ well organized!

But the biggest part of Lisp is the interactive development. You really have to see it, and I love showing the [Bruce's Figwheel project presentation][7] because it's a very visual demonstration of what hot-reloading code and interactive development can bring. It also helps that he's doing Clojurescript in a live browser for web development.

[1]: https://www.reddit.com/r/Clojure/comments/6tq8f5/new_clojuri...

[2]: http://www.4clojure.com

[3]: http://www.tryclj.com/

[4]: https://repl.it/languages/clojure

[5]: https://clojure.org/api/cheatsheet

[6]: http://clojurians.net/

[7]: https://www.youtube.com/watch?v=j-kj2qwJa_E

"Practical Common Lisp", available online. Great book.

Also if you want to have nice silly fun, take a look at "Land of Lisp" which IMHO is destined to become a classic.