You can also use Japanese to learn Japanese....lol....
A good book that I found is the official textbook for the Nihongo Kentei Shiken (it's like the JLPT but it's aimed for native Japanese speakers). The exam even covers keigo.
I have the beginner level book (5-kyuu and 6-kyuu).
Something that I like about the textbook is that it's not formatted like a typical textbook (with patterns and exercises). It reads more like a novel with examples spread out within the paragraphs. The style of writing reminds me of "Making Sense of Japanese", but without the humor. It almost feels like someone is sitting next to you talking about japanese grammar in practical, very easy to understand language, without getting crazy about the nitty-gritty details.
Great for learning the Japanese needed to ask people about using grammar in hypothetical situations.
Beginner (敬語, 文のきまり, いろいろな言葉, 言葉の意味, 書き表し方, 漢字):
http://bookweb.kinokuniya.co.jp/guest/cg...=02&LANG=J
Intermediate (敬語, 文法, 語彙, 言葉の意味, 表記, 漢字):
http://bookweb.kinokuniya.co.jp/guest/cg...=02&LANG=J
Advanced (敬語, 文法, 語彙, 言葉の意味, 表記, 漢字):
http://bookweb.kinokuniya.co.jp/guest/cg...=02&LANG=J
The books are relatively short (150-170 pages) with maybe 30-40 of those being grammar and kanji guides in the back of the book.
And unlike the JLPT guides, these books are aimed at native Japanese speakers.
Speaking of languages, does anyone know any good Japanese books for learning Korean?
Thanks.
Edited: 2010-03-11, 5:48 pm