I am finding that Monads are one of those things where they are just not going to make sense until you have written a bunch of code with them. (And I think once you get to that point you will wonder how you ever lived without them.

I get the Maybe Monad and the Container Monad. The State Monad and a few others leave my head spinning.

If you would be interested in being a tech reviewer I can probably get you a some free e-books. It is being published by O'Reilly