Hi @delama
I wonder if you might benefit from taking the ‘Fundamentals of Animation’ before this course.
A lot of the questions and stumbling blocks you are experiencing are explained in detail in that course.
You will learn about objects vs rigs and the advantages for using rigs (even when it’s a bouncing ball)
Plus you will learn about the different modes and many of the fundamental things that will deepen your understanding before tackling this harder course.
You can pause where you’re up to and pick it up again from where you left off.
I think this will save you a lot of headaches.