Stuff on my site vaguely related to 日本
Pictures from my two week homestay in Niigata and a brief stint in Tokyo.
Some modular origami stuff I did back in the day
All Japanese All The Time
Remembering the Kanji
JLPT Study
Guide to Japanese Grammar
There's plenty of material on those sites so I'm going to shut up and let you read. The concepts outlined in AJATT can be extrapolated easily to other modern languages.