I did it!

My Problem

My old battery was already sputtering.

My Fix

I was able to do it! At the ripe old age of 65! I was able to take a photo of the unpacked stuff, but I was so excited with the repair that I forgot to take photos of me doing it. Oh, well. Next time. :)

My Advice

Just follow all the instructions on the iFixit site, and you'll be fine.