Reading is critical to gaining fluency in a foreign language. For Japanese, that means learning kanji , the ideograms, and kana, the syllabaries. Here are some of the study materials I use.

Kana - There are two forms of kana: katakana and hiragana. Kana are not ideograms, but syllabaries, representing the sounds of Japanese. Kana are very easy to learn, as you'll find out here.

Kanji - Here's the hard part. Japan borrowed Chinese characters for writing centuries ago. The two languages are totally different, however, so kanji make written Japanese a bit difficult - and very beautiful.

Reading Exercises - The exercises I made myself were  designed for use on my own computer, not the web.  And I'm not a programmer. So...and I really hate to say this....some of them work best in Explorer.