We bought it all for Ianto, taught ourselves some signs, then never got around to using it with Amelia. She does make a few hand signs for different things, but no actual sign language. I'm actually starting to teach myself some more basic signs, and will do an Auslan course when Amelia's starting school/homeschool, so bubs #3/4/5/... will most likely have some signing going on

I can lend you my Baby Sign book if you like, I got it from an expo