This guide is missing critical information.
I only found this out after my LCD and DIGITIZER shattered while I was trying to separate them. While dealing with the millions of tiny glass shards, I threw away too much. Without good info, ordering replacement parts was guesswork.
So, it is important to realize that, if you need to buy replacement parts, the following are all distinct from one another:
1. LCD display (only visible in step 13 above)
2. DIGITIZER (glass surface)
3. FRAME (or bezel, that holds everything together)
4. LCD RIBBON CABLE (discussed in step 8 above)
You can buy an "LCD ASSEMBLY," which includes the LCD and DIGITIZER as one unit, but it will not include either a FRAME or RIBBON CABLE.
The original metal FRAME is likely much nicer than any replacement you can find (which will probably be plastic). You should try to save it at all costs. The RIBBON CABLE is easy to remove and save, if you think to do it.
These are important things to know.