Excellent instructions, it took me about 15 minutes to change the hard drive. A few notes:
1. For step 4 on my unit I had two 35mm in the bottom center, two 25mm on the bottom outside and two more 25mm on the right hand side of the screen, leaving me with six 13mm screws on the top and left hand side.
2. If you have someone to hold the display panel, or a way to prop it securely, you can skip steps 7 and 11, this makes the process go very smoothly.
Getting El Capitan on when the previous hard drive was completely shot took about 10 hours. My other Mac was too old to be upgraded to Lion. So I couldn't make a USB install on the live Mac from the App Store. My Snow Leopard DVD was destroyed, and the hard drive which had the recovery partition was dead. The nearest Apple Store is a 320 mile round trip. I found other sources for the El Cap installation, but posting about that is probably against the rules here.