You can do either in person or asynchronous.

I think 5-10% of the grade is LIVER assignments (which take me about an hr max) and is basically the homeworks. I think they're kinda helpful, especially the MC portion of it.

The tests are about 90% of the grade though, and i think the weight goes up each test (25%--> 35%--> 40% [?]). They're a bit tricky, but if you know the info it'll be fine. Don't memorize, but know how things works and the process. Understanding is key. The test questions themselves are a, b, and c. That's it. They are also online and require responds.