Broken touchscreen, broken LCD display
Very easy. Just open the tablet, remove everything from previous assembly: battery, ribbon cables, motherboard, cameras, buttons, sensors, antennae, audio connector, sensors etc. Put everything on the new assembly. Close. Enjoy.
Note: makes sense to first test the new screen by connecting it to the motherboard first.
Be patient and thorough. Use tweezers. While removing parts from old assembly, lay them one by one on the table in a similar fashion as they are on the assembly. This will help not to wonder where the !&&* everything goes.