Amazing code video that explains everything: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwi67PKq5aHvAhURbs0KHQ25DdUQwqsBMAN6BAgFEAs&url ...
The naming conventions are kinda janky at the beginning but gradually get better labeled. It's all in one txt file so good luck!