Forum FAQ
https://forum.kicad.info/t/start-here-frequently-asked-questions/8890
Made with KiCAD
https://www.kicad.org/made-with-kicad/
External Tools
https://www.kicad.org/external-tools/
Package Library (Plugins, Libraries, Custom Themes)
https://www.kicad.org/pcm/
Getting Started
https://docs.kicad.org/8.0/en/getting_started_in_kicad/getting_started_in_kicad.html
Documentation Hub
https://docs.kicad.org/
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For Deeper Mastery of the Program, read the manuals and annotate the same way I wrote my Getting Started notes.
https://docs.kicad.org/