Very recommended for beginners with Atari ST(E) and followers: Atari ST Tour floppy. It was released in 1986 and supplied with some Atari ST sales, I guess mostly in USA .
There is even one game in it: Ranarama .
Get floppy image at atarimania : https://www.atarimania.com/game-atari-st-atari-st-tour_25770.html
Hard disk adapt: https://atari.8bitchip.info/SCRSH/atsttour.html
YT video: https://www.youtube.com/watch?v=evWI_MabXbQ
Nice, thanks! :)