My PPL helped me learn how to fly the plane but flying "in the real world" has been helping me learn how to fly the plane even more. For example, I practiced slow flight with a CFI and solo, but it wasn't until I thought to myself what if I want to go a bit slower over these hills? did I realized yeah, I can just slow up a bit, add a notch of flaps, and make the world go by underneath me a bit slower. It appears that practicing "slower" flight can help me learn how to control the plane better both while just enjoying the world going by but also during landing.
Anyway, I know that I don't know much about flying, but I've really been enjoying more of seeing things from a different perspective and simply flying at various speeds in different configurations. Very neat.
I've been spending time flying over non-flat terrain (flat terrain being pretty much all I did during my PPL) but have also been getting more time with a CFI (for professional instruction) along with time with another BCP member with boatloads of experience (thanks Mike! we should do that again sometime soon). Additionally, I've just been flying on my own, too, practicing and applying stuff I learned during my PPL, here, and from other sources.
Those hills just north of Bozeman have some seriously steep canyons. They look so innocuous from the ground:

Seeing someone with a sheep wagon and a private tennis court is definitely a weird thing:






