Quoted By:
How much time do you typically spend working on a single photo in Lightroom?
Having just started I've been spending up to 20-30 minutes tweaking settings, but I'd imagine that decreases as you establish a consistent flow and style.
I took around 2 dozen images worthy of PP on a walk today so I'll probably be dumping those over the next several days as I get them fleshed out in Lr.