This looks like it’ll be a good book for me to learn more about electrical theory and circuit design, I know a bit about AC and DC electricity from working in electrical construction which should help me dive right in, thanks for sharing this book release!

I looked at sample chapter, the fonts and layout are visually repulsive.

The cover art is a gross error of judgement, and it stops me from buying this book for the next generation of hackers in the wider family.

Adults will understand that the "shush" gesture with the soldering iron is supposed to be a play on the "secret" in the title, but a large part of the target audience is 12-15 years old. There will inevitably be some who'll imitate the picture, with painful results.