日本語 Japanese Ask Questions Thread 6

If you have a question about the language, ask it and fellow 4channers might see it and answer it for you.

Japanese - Ask questions thread
http://dis.4chan.org/read/lang/1174719097/1-40

日語 Japanese Ask Questions Thread2 質問
http://dis.4chan.org/read/lang/1206158123/1-40

日本語 Japanese Ask Questions Thread 3
http://dis.4chan.org/read/lang/1267485093/1-40

日本語 Japanese Ask Questions Thread 4
http://dis.4chan.org/read/lang/1302350850/1-40

日本語 Japanese Ask Questions Thread 5
http://dis.4chan.org/read/lang/1330050873/1-40

Hello, I would like to know if, with my current level of knowledge, reading these three books will be any useful. I mean, do I know too little to understand them or make use of what they teach?

I used to know the kana but forgot them and will learn them again soon, took one year of light lessons but know the basics of japanese grammar, and some vocabulary.

Concerned books: http://img221.imageshack.us/img221/4450/3booksvn.jpg