It’s at-your-own-pace. As the Registration page says, there are no scheduled or live meetings or events. You can login anytime you want, and participate as much or as little as you want.

The structure is: each week has assigned readings, sometimes recorded videos, and you can study those as much or as little as you have time for, and at any time that suits your own schedule; then there are forums, where you can post your own answers to study questions, and post any and all questions you want to ask, and you can do that anytime. I then check in every day at random times to evaluate and comment usefully on answers, and answer questions in useful detail (and you can then keep asking follow-up questions as much as you need). You can also interact with other students there, but it’s always on your own time, like any other type of online forum, only these have no trolls, only serious folks who want to educate or learn.