Breathing new life into old tech
I'm all for repairing older electronics rather than replacing them. The dawn of lithium-based batteries has left us with devices that have a rather finite life due to the fact that for every charge, the battery degrades slightly. That being said, I wanted to give my ~7 year old iPod a fresh start rather than scrapping the whole thing and going with a Classic.
Cracking open the iPod SUCKS. This is no fault of iFixit of course- Apple just really doesn't want us opening these things it seems. The internal battery on my iPod was glued very, very firmly to the metal back cover as well. Another inconvenience, but nothing major.
For opening the iPod, have extra (soft) tools on hand to wedge in the seam between the plastic and metal. One is not enough. Also, the iPod wants to close so badly that it deformed the heck out of my first soft tool and I had to switch to another. BE PATIENT when opening the iPod, and be sure to release the clips on the bottom BEFORE the others. This will help.
As for the battery, I ended up using a credit card to get behind it and scrape through some of the beast adhesive that Apple lathered on there. Be VERY careful in doing so, to avoid damaging the headphone/hold button circuitry.