My YouTube channel is slowly atrophying, but I finally posted the last of the LED marquee videos, in which I show how to get one running yourself: https://youtu.be/8G8unBqflx8
The first video, which demos the full project, is https://youtu.be/W0_3rzvq9Ks

YouTube
FastLED and ESP32 Marquee - Part 3, Connecting and Configuring