Aside from the Genki series, I'll mention the other books that I use often for reference.
* Kanji Learner's Dictionary - Jack Halpern
* Kodansha's Communicative English-Japanese Dictionary
Kodansha's Furigana Japanese-English Dictionary
* Basic Dictionary of Japanese Grammar
Intermediate Dictionary of Japanese Gammar
Effective Japanese Usage Guide (Kodansha, may be out of print)
* - These are my favorites
I have to mention, for listening practice, the best resource I've found to date is http://www.japanesepod101.com. It's a podcast for learning Japanese. It's extremely entertaining, with very natural, commonly-used Japanese. Plus, it only gets better as the episodes progress. If you've never listened before, I HIGHLY recommend you give them a try. It's done a lot for my motivation, especially.
* Kanji Learner's Dictionary - Jack Halpern
* Kodansha's Communicative English-Japanese Dictionary
Kodansha's Furigana Japanese-English Dictionary
* Basic Dictionary of Japanese Grammar
Intermediate Dictionary of Japanese Gammar
Effective Japanese Usage Guide (Kodansha, may be out of print)
* - These are my favorites
I have to mention, for listening practice, the best resource I've found to date is http://www.japanesepod101.com. It's a podcast for learning Japanese. It's extremely entertaining, with very natural, commonly-used Japanese. Plus, it only gets better as the episodes progress. If you've never listened before, I HIGHLY recommend you give them a try. It's done a lot for my motivation, especially.