Heartfelt_Angel:
Thank you for your reply! How about hardware, is there a way to connect the flexible pcb cable of the display with the pins of the Pro Micro?
I'd have to say, if you need to ask about that flex cable, you are over your head right now.
You will need to etch your own PCB where you need to solder that flex cable to, or find a suitable connector (read datasheet for display, to see if manufacturer tells what kind of connector that fits) and then you need to etch a pcb with footprint for that connector, and pins for Arduino.
// Per.