@asalas using the Resize Drawer is not covered in curriculum, in part because we know it's a feature that we need to make more intuitive. We do teach students to use the
sprite.scale property in Lesson 6 (link) which hopefully is a little more intuitive.
We don't currently have documentation for the Animation Tab so there's no easy one-stop-shop to learn how it works. It's something we've discussed making and plan to make eventually. One way you could do some low-risk experimentation with the tool right now is by creating a new blank project in Stand-alone Game Lab and try out the different drawing and resizing tools there. FWIW the CSD team agrees that Resize Drawer in particular needs some work, but I think with a bit of experimentation at least the drawing tools on the left can be figured out.
Sorry not to have a more straightforward answer but I hope that helps you get started. If you have more specific questions please don't hesitate to ask!