I've got attracted to LISP by its JVM dialect - Clojure. Clojure is sort of great LISP, since
- it has "simplified syntax", that is less parathensis are required, there is cleverly design set of collections available
- it is JVM based, so there is stable, performant runtime underneath, in addition whole Java ecosystem (libraries, e.g. database drivers, build tools, IDEs) is within our reach
- Noir is a good web framework, apps can be deployed on Java web and applications servers
In other words, Clojure can be used in production right here, right now.
When it comes to resources, there are at least 4 books and planty online resources:
- Books: "The joy of Clojure" - very insightful but can be difficult, so it's best read together with "Programming Clojure".
- Online tutorials: Mark Volkmann tutorial is great
- see also https://stackoverflow.com/questions/599519/which-tutorial-on-clojure-is-best
- 4Clojure website contains a number of simple programming tasks, so one can play with Clojure and see other people solutions
