Go to openstax.org → “University Physics Volume 2” → download free PDF → read Chapter 5 (Electric Charges and Fields). That’s your true idiot-proof start.
Here’s a practical guide to understanding Electromagnetic Theory for Complete Idiots (the book concept) and how to find or use such a resource. Electromagnetic Theory for Complete Idiots (not an official "For Dummies" title, but part of a similar series by various authors, e.g., Gabriel Jiménez or Ingram Spark ) is a simplified, intuitive introduction to electromagnetism. It assumes no prior knowledge of vector calculus or advanced physics.