Hi Nougat Time,
Looking good!
As to your questions:
1. You can ask your questions here, or below each Lesson (if it is very specific to something that happens in the Lesson for instance; please add a timestamp in that case), If you ask a question below a Lesson, it will also appear here. If you ask something below a Lesson, the teacher will get a Notification. There is at the moment a bug, that doesn’t allow you to add an image to a question asked directly below a lesson, but if you then Reply to your own question, you can add an image. (only the very first post under a Lesson is missing the ‘add image’ button.
2. Just ask here.
3. If you used the default Render Settings, then you most likely have a high Resolution (looks like a 4K image to me, but I just woke up, so I might be completely wrong), because 10 minutes seems a bit long on your GPU. (Also make sure you have only your GPU selected as Render Device in your Preferences, because rendering using both GPU and CPU can be a bit slower than GPU alone.)
