Nowhere to be honest, due to discouraging geopolitical situation. We had a family project to (re-)learn together, but the lessons provided for my kids at school were poor quality, while at my age I doubt I'll ever get enough characters to stick, to enjoy interesting texts.Years ago gave a few lectures in chinese, about 二氧化碳，海洋 与气候，etc., but general vocabulary, cultural references, are harder than science.

I have about 2,700 characters in my flashcard pool which I started in May. I recently got hellotalk to practice with some Taiwan folk.