Is there any reason to limit the amount of languages you can get mentored in? I would be interested in using this if it was available for Clojure.
I decided this spring to come back to Clojure (which I used in 2008-11) because, while I prefer static typing (slightly, although it's 51/49 for most projects) the community is one of the best out there.
I think the O'Reilly reference is a great starting point, and after that there's the Joy of Clojure, which is covers some solid territory.
The community is very helpful, so that's one thing to keep in mind. Don't be afraid to ask questions in the way one might in some other language communities.
Have you tried using it at work? That will speed you along a lot faster. People fetishize after-hours work in this industry, but the truth is that it's usually better if you can find a way to make your day-job synergize with what you want to do in the long term.