Moviola used to be a paid website with a lot of video tutorials on film design. You will not only find quick instructions and crash courses on many relevant video and audio programs, but also countless archived webinars on countless topics (such as ACES workflows, film soundtracks or light construction). The basics section is also well sorted and definitely worth a visit.
Until now, access to this online film school has cost between per month and per year. But without further press releases or similar, access to all content has been completely released this morning. A short message on Reddit suggests that the free activation is not an accident. On the page itself you will find the notice "Brought to you free coutesy of filmtools", which links to a registration form that only offers a 30-day trial period or payment. But as I said before, even without registration, access to all content is currently available. Just browse and browse....