The next language I'll put my hands on will be...

F#. I had already chosen to learn a new FP language. My choice was F# because:

it is statically typed (may be one day I'll catch up with the dynamically typed ones, until then my past traumas will no doubt keep me away from those);
it's not pure FP - there is a scape valve for my ignorance;
it's syntax is not too awkward;
it has a nice IDE I am used to;
comes freely attached to our beloved CLR :) ;
as an R&D language, I won't be committed to F# - kind of a one night stand with a language :) ;
I got my hands on a copy of Foundations of F# by Robert Pickering; it's a very accessible and pragmatic book,  look for your selfs:
CHAPTER 1 Introduction
CHAPTER 2 How to Obtain, Install, and Use F#
CHAPTER 3 Functional Programming
CHAPTER 4 Imperative Programming
CHAPTER 5 Object-Oriented Programming
CHAPTER 6 Organizing, Annotating, and Quoting Code
CHAPTER 7 The F# Libraries
CHAPTER 8 User Interfaces
CHAPTER 9 Data Access
CHAPTER 10 Distributed Application
CHAPTER 11 Language-Oriented Programming
CHAPTER 12 The F# Tool Suite and .NET Programming Tools
CHAPTER 13 Compatibility and Advanced Interoperation