Click here to read an article by ChromeUnboxed from March 2021 called "Chromebook Help May Soon Be Available Through Your Launcher Via The Everything Button"
Click here to read an article by HowToGeek from April 2021 called "How to Use Function Keys on a Chromebook Keyboard"
Click here to learn more.
Click here to learn more.
Click here for an XDA Developer article that talks about 'External Keyboards' and 'Key remapping' and shortcuts for 'text editing'.