Also, I think it’s possible to consider RNP/RNAV and following the FMS line is considered as ‘learning IFR’. Yes that’s how an A320 gets from AtoB, but there is a mass of background techniques and skills to be mastered first.
Many RNP approaches are actually mirroring an underlying VOR/NDB procedure, but putting the plane in the correct spot with GPS. In Airbus speak these were referred to as ‘Overlay’ approaches.
Outside of RNAV is a wealth of interesting and rewarding IFR flying