What makes iPads in general a pain to repair is the glue and the home button, especially models with TouchID. Thankfully these ones don’t use it so if you tear the button, it’s not the end of the world. Use plenty of heat and be patient. Avoid touching the LCD with your bare hands. It’s harmless if you do touch it, it’s just a bit of a pain to clean if you do. Use actenone and a Q-tip to clean off any adhesive residue from the frame once you get the old screen off. It’ll make sure the new screen stays put! You can also “Frankenstein” the device to test the new digitizer before you glue the new screen down.