itch.io

i´m new in this type of probems and i dont unterstand this: 

Enter: (change this to where your exe file is located)

cd C:\Users\<USERNAMEHERE>\<WHERE THE .EXE FILE IS>

i did the other part but he make error i think because of that, can you explain me what this mean and how to do it plis, i spend my money and i cant play. thanks.