Today I bought a used iPhone 3G from one of my classmates for a very reasonable price. Only problems were that the glass/digitizer was completely shattered and the back cover had a crack (don't worry, I bought the iPhone knowing these issues). I have ordered the replacement parts, read iFixit's guides, and watched YouTube videos to fix these parts. I was wondering if anyone had any insight or advice before I dive into the process of tearing apart my iPhone. Thanks ahead of time 