I used this youtube video ( http://youtu.be/6aQn-HkvtvM ) and managed to open my case twice now with no damage at all. I took my sweet time taking it apart and watched it over and over and paused after every step. I didn't end up using any of the tools iFixit provided until I got into the case. The thin blade on an exacto knife worked great you just have to be extremely careful! (I stabbed myself once in the thumb, would recommend wearing leather gloves or something like that) I replaced both my battery and headphone jack no problem! Thanks iFixit and thanks for the people who put together this guide! Saved me a lot of money!