Microsoft Educator Center has a wide range presenter-led prerecorded trainings on online teaching and and not only. Below are some of the courses you may find useful:
Visit Microsoft Educator Center to explore more courses.
Microsoft Teams for Education also offers a range of teacher training packs for free. The topics include:
Creativity in the classroom;
Inclusive classrooms;
21st century classrooms with Microsoft Teams;
Data collection and assessment and more.
You may access the full course list here.
Also, Microsoft has series of virtual workshops and trainings for educators, covering a wide range of topics such as, Hybrid learning tools and Microsoft Innovative Educator Training series.
You may also want to visit Microsoft Teams for Education blog to learn more about other educators' experience in using MS Teams for online teaching and enhance your skills by taking hands-on courses from Microsoft or joining MS Teams for Education webinar series . Also, you can access the recorded version of previous webinars here.