Confused about CSGO SDK usage
So i'm using this boost (https://github.com/MarkHC/CSGOSimple) in order to write a CS:GO skin changer, however, after hours of research, I just can't find out where to start. What would I even need to do in order to change the CS:GO skins? How do people know how to do this?? (Lastly) What is the best method for writing an internal skin changer? Thanks for the help, in advance!