Links in the resource section are all broken.
e.g. https://quanticdev.com/articles/most-valuable-thing-to-learn...
should be instead https://quanticdev.com/articles/raspberry-pi-guide-for-devel...
Check out something called "Core Transformation Process", it's a simple algorithm, you can learn it in an hour (although I think the full training is ~3 days, but that includes other stuff as well), and it has very profound effects.