So, for example: If I have a line of code like void Move(), what will go inside those brackets? I have seen people put variables in them, for what use?
void is describing the returned type, if the method returns anything then you need to specify the return type, be it a primitive type(like int, float, string etc) or a complex/custom type. The returned type doesn’t determine the method arguments/parameters. What goes between the parenthesis are arguments/parameters to be used in the method, none are required to do work if what you need is available or will be retrieved in the method.