Clojure (introduction) by Marko Bonaci.
Another “Clojure? That’s a Lisp, for god’s sake!” Clojure introduction by a rehabilitated Lisp avoider.
From some of the Lisp horror stories, I have to wonder if the C or C++ communities have agents they send out to teach Lisp. 
Your experience here will be nothing like any prior unpleasant Lisp memories!
The GitHub view of the tutorial exposes other interesting resources on Scala, Spark, and more.
I first saw this in a tweet by Anna Pawlicka