If you’re interested in Common Lisp, Practical Common Lisp is a good overview of the language [1]. Since you’ve done game programming, here’s a simple snake game I wrote a while back; you might find it useful to peruse the code [2]. You can find a couple of bigger libraries I wrote on my github if you’re interested in seeing more substantial code.
[1] http://www.gigamonkeys.com/book/
[2] https://github.com/SahilKang/cl-snake