In my expercience the sequencing is really important.
(functions,master timeline, labels )
What i find to be missing sometimes are some free in dept tutorials.
example: How to create a smiley face and animate the eyes so it looks like he winks.
Things that make you go like: "Ohw thats how they do it, or : I wouldnt have thought about that"
Just some tips and tricks and really take a long animation appart.
There is allot of documentation on this website wich is great. But for people like me showing me would be much more interesting.
I would suggest to look at the paid gsap courses out there and create something similar.