RGB LED Matrix Display /RPI 4

Im pretty new to RGB LED matrix displays on RPI 4 so i dont know how to start with coding I dont know if im suppose to use Terminal and when to use Python to start the install of a 64x64 RGB LED Matrix display using a conversion board for RPi to HUB 75 for RPI GPIO controlled RGB LED display!I need step 1 to step the End and it is posted no where also when you go to Github and unzip Zeller zip file what do you do after unzipping it I cant figure out what to do?I told you im a newbie at this so can i get the RPI community to help me and put a smile on my face when my displays show something!!!