My son had broken his iPad mini twice before, and both times we paid someone to fix it. This last time, I decided that the cost of having someone fix it was just too much compared to the value of the device. So I told him that I would try to fix it, and if that failed, we'd trash it.
It went great! I tried to repair an iPhone 4 about 4 years ago, and it went horribly: I broke the LCD ribbon when I was putting the case back together.
The instructions were perfect, and I told myself that I would take it very slowly, and even break it up over a few sessions, which I did, 2 to be precise.
Honestly, if you take your time, and at each step, make sure you fully understand what the instructions say BEFORE you start, it should be a snap. I will say that the new Digitizer that I ordered already had the connector folded over with adhesive, so I skipped that step. Also, I did not find any magnets inside the old Digitizer, but that may be because it was an aftermarket one (replaced by a previous tech). My son's iPad had been dropped right on the bottom corner and it caved in the metal frame a bit. It was impossible to fix that, so the new digitizer does not fit perfectly, and it is raised a tiny bit on that corner where the new adhesive just can't bind with the pressure from the corner.