I’m a teacher as well and currently manage a makerspace at a K-8 school. I’ve taught Thunkable but I primarily use it for prototyping ideas.
What sort of guidance are you looking for? I would just suggest starting with the tutorials or diving right into the interface to see if you can create a simple project.
If you have questions, you can post them in a new topic on the forums. It’s best to review these suggestons: How to ask Great Questions v2.0.