As Grounded said there are a lot of existing threads so please take a look through, but I think the most helpful in terms of course structure/content and up to date info is here: ACLC Course 2020
You might something extra on a deeper dive, though.
In that thread I mention that the timed run isn’t timed - afaik that is still valid info.
I agree that there’s a slim chance it runs this year unfortunately, but if you have any specific questions that you can’t find answers to already, then come back here and ask away!