We actually have TWO WooCommerce courses. The newer of the two is our WooCommerce Quick Start, and it was just produced this past year. I believe that means it uses WooCommerce 3.4 or 3.5.
The other course, our WooCommerce 101, is much more in-depth, and was recorded in 2017. We are working right now with the Automattic team to update and record a completely new series of video tutorials for WooCommerce 3.6. So, stay tuned for that.
Hope this helps!