Medium difficulty, seriously? I dismounted with great pain, everything is taped everywhere. When pulling on a piece, everything comes, one feels parts writhe under the force exerted ... In the end, the iPod is dismounted, I change the screen, I had trouble to replace the button with wire in the right place and I mounted everything again. After several hours trying to stall while the right place, I drop. The ipod is raised but the screen is raised compared to the original, the home button is functional but I have to press very hard on it for it to work and, above all, I damaged part of the LCD when disassembly, so my screen is new, but the LCD does not display properly all the information.
One advice, do not repair Ipod, do not buy Apple.