This was a workout! This took me 75+ min.
Very hard to open. Needed butter knife to work the crack begun by iPod opening tool (aka myFinger opening tool when it slips); would take forever with only the tool. Hard to sense when retaining clips release. Please use screws, Apple!
Step 6: Really tricky to slide up the tiny brown connector latch without popping off either it or the tiny white logic board connector. So delicate! I popped off both. Argh! By God's grace, nothing broke, and I got it all back together.
Steps 7-9: Skipped, and glad I did, given #6; just be careful not to over-twist ribbon cable joining case & face..
Step 10: Don't pry out battery looking from same angle as in photo; turn 180 degrees so you can see what's under battery, where to pry or not. I pried with small screwdriver; plastic tool is wrong shape. Apply leverage sensitively; peel headphone ribbon cable off adhesive as you go … slowly. I left some paper on adhesive so cable wouldn't adhere again.
But success. Thanks, iFixit.
Could not be clearer. Thanks so much. (And your saying that this task has a "moderate" degree of difficulty makes me feel like I have some skill!)