If you want to dive onto ocaml, I would highly recommend the "Real World Ocaml" book. That said, I agree with berdario that you should learn both languages ins

If you want to dive onto ocaml, I would highly recommend the "Real World Ocaml" book. That said, I agree with berdario that you should learn both languages instead of only one of them. There is lots of terminology that is shared between FP languages too so it shouldn't be very hard either.