The Japanese guide to Japanese grammar is a guide that explains grammar in a systematic step-by-step process. It is released under the Creative Commons License (2.0). It was created as a resource for those who want to learn Japanese grammar in a rational, intuitive way that makes sense in Japanese. The explanations are focused on how to make sense of the grammar not from English but from a Japanese point of view.
“Tae Kim's Japanese guide to Japanese grammar,” ibiblio catalog, accessed May 22, 2015, http://www.ibiblio.org/catalog/items/show/4118.