Strongly recommended · for beginners
Getting To Blinky 5.0 - Introduction
Why people recommend it
Opening part of a KiCad series often named as the way into PCB design, with advice to follow it through and order the board.
Watch for: Made with KiCad 5, so later versions look a little different
In their words
There are many good online resources online; one of my favourites is Chris Gammel's Getting to Blinky (even though it is for KiCad, but the principles are the same)
Jakob Halskov on electronics.stackexchange.com, Jul 2021. CC BY-SA.