I'm currently reading the Wool omnibus by Hugh Howey. It's pretty decent I've been making very rapid progress as it's been too hot to sleep here recently now the summer has arrived.
I haven't seen the Apple show, but maybe I'll watch it in the future when I've finished all the books (I had Shift and Dust as well).
The Foundation series is absolutely amazing, and I am jealous of you if this is your first reading. One of my formative series growing up. You're inspiring me to do the whole Asimov read through like your doing, because I don't believe I ever read the Empire books and never read Robot beyond I, Robot.
I'm surprised The Caves of Steel is so early as it seemed really futuristic compared to most of The Complete Robot, but I read it a long time ago so maybe I'm not remembering correctly.
Well all short stories in The complete robot are with "normal humans" and their interactions with the first "robots" on earth when there was no faster than lights spaceships.
The Caves of Steel instead is the first of the robot saga where humanity is divided between human from earth that lives inside the big underground cities and the "spacers" which lived on several different planets and are almost a new spieces because they have been separated from earth for several centuries.