Basic competence comes pretty quick, it's a small core language, compared to most. Most things like transducers you can ignore for a long time. The longest pa

Basic competence comes pretty quick, it's a small core language, compared to most. Most things like transducers you can ignore for a long time. The longest part of learning it for me was learning to think functionally, but you can do that in pieces, and nearly all of what you learn is applicable to any functional language, or even imperative languages with functional aspects.