There are quite some possibilities with GN when you need some advanced arrays, or some modeling based on curves. In fact most of the modeling I’ve done are made with curves and a profile for thickness to get some beveled angles.
I think for regular modeling the best is to create some custom modifiers with GN that can help speed-up some tedious tasks, and these you can reuse on a regular basis. In general it’s quite slower to model with nodes, unless you really have a lot variations of the same basis.
Here are some tutorials that helped me to get started :
https://www.youtube.com/c/JohnnyMatthews/videos
I’ve also watched some houdini tutorials to understand more the procedural workflow, and I’ve tried to replicate a few things in blender.