I didn't use this specific course, I came across it later, but pretty much everything in it I taught my children early on; My parents taught me some of these things when I was young but these are the skills to teach and practice:

Learning How to Learn: https://www.coursera.org/learn/learning-how-to-learn/

And we use the Trivium as the curriculum to guide them and we used this resource primarily to develop their curriculum:

https://welltrainedmind.com/?v=7516fd43adaa

I will say this - I am excellent at math; even higher math such as Calculus. My wife is excellent with Grammar. So we are able to help them when they do run into some difficulty - but for the most part they can consume a subject on their own at this point.

In terms of reading early on we checked out the hooked on phonics at the library. With Math I made them memorize their math tables and how to do math in their head with one of those "Mental math" books - also from the library. I also taught them some common ways to memorize things and had them from early age to memorize songs, scriptures, and poems.

Learn these things early and there is no stopping a kid...