Moo is a tool or concept that requires specific context to understand its use. If 'Moo' refers to a software, application, or a specific method, you would typically start by reading the documentation or user guide provided by the developers. If 'Moo' is a term used in a particular field or community, you might need to consult resources or experts in that area to understand its application. Without additional context, it's challenging to provide a precise method of use.