Definitely go through the "ArchiCAD Essentials" training guide -- unfortunately, it doesn't seem to have been updated for AC14 or AC15 yet.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004