Normally I'd include something about the time of year and how if you're going to pass this class you need to be thinking about this or doing that, but let's be honest - despite my ongoing insistence, only about a third of you will read this website or watch these videos no matter what I say - and you're the ones doing well anyway. So I'll spare you the exhortations.
New videos are posted. They'll make class easier. I'd start at the bottom and work your way up for a slightly more semi-chronological order.