Insufficient information about using the base templates

[WhyINeedToFillUsername]

The only information about the base templates concept is this page https://github.com/StyleT/tailorx/blob/master/docs/Base-Templates.md, however that doesn't help with how the templates should be structured (where to save what template), if/how to use multiple base templates and so on.

It would be really helpful to have more information about this concept!