I can't wait for Polish to come out! I already know a good deal about it and I hope to learn more!
I'm doing audio lessons, learning simple sentences like Czy można to kupić? But of course, we don't buy Duolingo lessons (⌐■_■)
In Warsaw there is a place called the Copernicus Science Centre that has almost any experiment imaginable! I went there once and hardly did anything compared to what's there. It's so fun!