I barely scratched the surface of this amazing resource but will come back to it for years to come. I wrote about my and my son’s explorations with it here; https://metatek.blogspot.com/2019/08/....
This book is an amazing introduction to electricity. It has a very strong focus on conceptual understanding which makes it a pleasant but eye-opening read, and allows it to bring in contextual pointers like industrial safety techniques.
I left the book confident in my ability to dive into electronic circuits and practical applications.
Excellent quality tutorial on basic electronics: All About Circuits is the perfect place to start for a beginner, especially since it's free and open source.