SCIENCE SECONDARY 3
I have noticed that in many textbooks and some assessment books, they are written in a non-progressive sequential manner. So I found one website where it brings up certain jargons, and words into clarity, and learning is way more sequential.
You might like to start from here first. Can resolve quite abit of confusion with the jumping information.
Another channel I found really useful is this:
You might also realize that I had placed some advanced links in sec 1 or 2 pages as well.