Process Documentation example

I find myself replacing broken screens and digitizers for phones and tablets quite often. I have become rather proficient at it, but the first couple of times I was asked to change one I had no clue what I was doing. So I hopped onto YouTube and searched for Videos to help me with my dilemma. I was surprised to find a large number of videos that documented the replacement process for many different phones, tablets, laptops. My example is a video on how to replace an iPhone 4 screen

iPhone 4 Screen Replacement