This page offers several hundred lessons for Chinese about different topics, including both reading practice and listening. They also have some learning activities, including quizzes. I have tried a few of them and I don't think the level rating is meaningful (the ones I found for level 1 didn't look beginner friendly at all), but this is still a neat resource for intermediate and advanced learners who don't want to buy a textbook, but still want some guidance and "real" studying.