I would recommend the first step is: Run the battery down to ZERO before doing any next step. This reduces risk to you, people nearby, to the MBP and greatly reduces the risk of fire. Step 2 should be: Double-check that the battery is at zero.
I like others listed below and on YouTube, disagree with these full tear down 70+ steps being the only focus. I get that I have to be careful not to get the acetone solvent near the speakers. I skipped 25+ steps by: tilting the MBP away from the speakers and using very little acetone solvent. More pressure with the plastic cards and only a few drops of solvent. While giving the full set of instructions is fine it should be very clear that you can (at the user’s own risk) do this.