Undecided questions
What's the best way to understand Japanese grammar?

Hi Anaya, here are some interesting topics about Japanese Grammar コラム統計計算文法考 A Japanese guide to Japanese grammar ( http://www.guidetojapanese.org/ ...
homepage3.nifty.com/jgrammar/

This guide was created as a resource for those who want to learn Japanese grammar in a rational, intuitive way that makes sense in Japanese. ...
www.guidetojapanese.org/

'Making Sense of Japanese Grammar' explains in a lively and highly informative manner basic principles of Japanese grammar.
www.worldlanguage.com/.../Making-Sense-of-Japanese-Grammar-A-Clear-Guide-through-Common-Problems-Learn-501974.htm -

What textbook have you used so far?

I used to teach at high schools in US. If you have any questions about basic grammar, I can help you ; )

One of the best ways to help your understanding of grammer and words that you've learned is to watch japanese media (anime/dramas/etc) and listen and see how it is used by native speakers.

japan"s cartoon may be a good choice

Hello Anaya,

You might need some help from a Japanese teacher to teach you the basics of grammar to start with ,then you can learn on your own.
It is recommendable , because otherwise you will not have a solid basis for advancing further in learning the intricate grammar structures.

You could check the following grammar guides as well :

http://www.guidetojapanese.org/learn/grammar
http://www.languagelearninglibrary.org/japanese/grammar.htm