Finally seriously looking at #Obsidian Sync.

Where should I store my vault on my #Mac? I feel so lost! For years × ∞ I've put everything in Dropbox or iCloud, but that, I hear, is a recipe for sync troubles.

* looks at computer as if for the first time, confused expression on previously confident face *

Why is my Documents folder greyed out? Where am I? *Who* am I ?? Help me, obi-@obsidianmd, you're my only hope!