Bathroom renovations part 1 removing old stand up shower

What you are about to see is my bathroom renovation project. I had a stand up shower in my main bathroom which was old and needed to be changed. Due to financial constraints I decided to attempt the job on my own. I kept a video journal of the progress. That is to say that, every now and then or whenever there was some progress I would grab my camera and tape for a few minutes. This is why it is choppy and you do not actually see someone working. I would also comment. Please excuse the at times boring things I say. This was never intended for public viewing but was intended for my own use. I wanted to remember the work involved in performing these renovations. Video taping allowed me to have a before and after picture of the shower plus all the steps in between. The new stand up shower that I will be installing was purchased from Costco (in Quebec, Canada) for approximately $600. The brand is OVE and the model is the ows-03s. As I go along I will try to give explanations as to the materials and products that I used. Hopefully, it may be helpful to someone considering a similar project.
Part 1 shows the old, original stand up shower and its removal.Thank you, Tony the Turtle.