The next thing you'll probably want to check out is the curricula section. Here we've got common lists of characters and words from the Japanese government as well as popular text books and tests.
If you’re just starting out in Japanese, I’d recommend learning the phonetic Hiragana first, followed by the Katakana. Both of these are really vital and will help you study kanji later because you will be able to understand the readings.
If you’re more advanced, there is content for all levels of proficiency. You can find information from the Japanese school system, JLPT Tests, Genki Textbooks, Heisig's Remembering the Kanji, and more. Check it out!
If you want to try writing a specific word or character, or just want to look something up, check out the dictionary section. You can search for almost any Japanese word or character, and the entries include the components that make up the kanji in the word, a list showing how common each reading is, and more.
And finally, if you have ideas or notice problems as you explore the site, please don't hesitate to send your feedback.
Until next time, 書きましょう！ Let’s write!