There are so many threads and topics – it's up to you which one you choose.
If I'm interested in cables, then I follow cable discussion threads.
If I'm interested in fuses, dito.
That said, I (probably) will not change my audio components anymore since I'm satisfied with the way they sound now, after 50 years of exploring and trying...
BUT there's still and always room for tweaking my system because it's fun!
What makes my day: Listening happily to music I enjoy.