[quote=SailorMoon]
If you want to learn Japanese definitely try the Genki books. :3
[/quote]

Only if they're free. I'm really cheap like that. I have two really good free apps that have helped me a whole lot: i-Sokki and Tae Kim's Learning Japanese. In fact, just using those things and I'm beginning to understand at least 10% of anime dialogue right now. Sometimes the things I study I hear later on that same day when watching an episode.