Each class is recorded live and will be available within 24 hours for you to watch or listen to. Playing back the recording is not a substitute for attending class live, since we're a community of learners, and a big part of the learning will come from the live discussions we have in class. But some people find it helpful to review the recordings afterward, especially if any concepts are unclear or confusing. And if you are sick on a given class day or have a family emergency, watching the recording is a decent alternative.