One book that really helps me get some stuff is "Japanese Verbs at a Glance" it explains many things that I had trouble understanding, I am inputing the info into anki and hopefully it will help me improve. This book comes highly recommended.

So Are there any books that helped or helping you learning japanese ?

Hi, loverkanji.

A Dictionary of Basic Japanese Grammar Plus the other two volumes are quite helpful I think.

Japanese in Mangaland (be sure to get the workbooks as well).

Also I got this book that trains reading practice for the JLPT N5, which is quite good.
Here's a link to it: http://www.thejapanshop.com/Unicom-JLPT-...=salesrank

Whoa long link. O_O