Game has built in manual (access it through main computer) and there are couple of great online sources for game, including:
There are few more, but this should consist of everything you need to know.
Also, use youtube tutorials to learn how to do stuff properly - this will save you/your son many hours of figuring it out yourself.
https://www.youtube.com/channel/UC0R...8EEQGHz_z58nVA