The tricky thing about online classes is that sometimes assignment instructions are ambiguous or unclear, so students can easily misinterpret them. It's also easy for students to assume that other students in the class are doing assignments correctly, which can result in a "herd mentality" and lead the entire class in the wrong direction (I've experienced this more than once). Clarifying something when the class physically meets every week is easy: You can read the instructor's body language and tone of voice and receive immediate answers to your questions; but in an online environment it's harder to know when you've misconstrued something. Unless the instructor has very clear and thorough guidelines, and unless the students read them carefully, there will be misunderstandings.
Hybrid classes (50% online) can also be misleading. You only have to show up to class once a week, but when you check Blackboard (or whatever online environment your instructor uses) suddenly there's a bunch of homework due the next day! So, if something is vague and can be interpreted in different ways, ask the instructor. That way, he/she can also improve the online content for future classes. And check your Blackboard every day so you can know what's going on in class. And don't assume that the other students know what they're doing!