I do several lessons early in the day and post questions as I get confused. I get to your responses later. So, yes, since the whole "inanimate masculine" is the new stumbling block, you probably DID get several questions from me about it. But you never answered my other question, i.e., is there an "inanimate feminine" to be dealt with down the line as well? Since DuoLingo is the only method of learning I'm dealing with re. Czech, and there seems to be no coherent guide to what is being taught (just make the mistake, get it marked wrong, THEN ask why it was marked wrong), this seems to be the best way to proceed. Again, apparently there is some Tips and Notes section that can be found but I have had no luck with doing so. And I'm working on a laptop so I assume it's the "web" version.