Other free online materials to use in addition to Duolingo?
I like the course so far, but I feel that the base format of Duolingo falls short in a few areas. In particular, I feel like vocabulary could be taught much faster in a different format which allows for more explanation rather than just showing by example. I also feel that translating longer sections of text is helpful, and Duolingo isn't really good for anything above one or two sentences. I feel like a Polish textbook would be best for the way I learn, but I am cheap and doing this in my spare time.