I recently took a Programming Languages course and was required to present a language of our choice in an ~1h presentation. I chose Lisp, specifically Common Lisp or CLisp, because I didn't know anything about it, but liked playing with the functional language ML that we were tested on in the course. Functional languages (oCaml, ML) are much different than imperative languages (C++, Java) because the concepts like recursion, lambda functions (or inline functions), and high-order functions are the basic tools used by functional coders. In some functional languages, like ML, there isn't even a traditional looping syntax and recursion is your only option.
Anyway, I enjoyed learning more about Lisp and thought I would share my presentation files. If you've never seen Lisp before, this presentation does a great job of outlining the basic syntax, standard libraries/data structures, as well as some other fun intricacies about the language. There is also some red text that shows the ML equivalents of the Lisp code. You can download the pdf below.