Online video training course?

I remember seeing a free online course several years back. It was about 60 hours of video broken down starting with shop safety.

I took a machining course a couple years back at a local community college and I am looking for a refresher since I haven't used what I learned since then.

For the life of me though I can't find the course though. Anyone have an idea of what the heck I am talking about or did I imagine it all.