How are you preparing for, or reviewing, your Japanese classes?

On the internet you can find sites containing supplementary learning materials to help you prepare for, or to review, lessons from certain textbooks.
Obviously, these sites don't correspond with all of the textbooks but they can be very useful for previewing and reviewing, and also help you prepare for quizzes.

Let's look at some study websites designed to run alongside the "Genki" series of textbooks.

"GENKI"
Writers: Eri Banno, Yoko Ikeda, Yutaka Ohno, Chikako Shinagawa & Kyoko Tokashiki
Publisher: The Japan Times

Genki-Online Self-study Room

This site is part of Genki-Online.
・GENKI Videos
・GENKI Apps
・GENKI Drills

With GENKI Drills, you can use Quizlet for example, to practice vocabulary, conjugation, and kana/kanji for each lesson.
You can watch videos here, too.

Nihongo Kikusasaizu!（Introduction article）

On this site you can practice the listening for GENKI: An Integrated Course in Elementary Japanese while watching anime.
The scenes are set at a Canadian university and depict the daily life of university students.

Usagi-chan's Genki Resource Page（Introduction article）

You can study ‘Genki’ vocabulary and kanji here, so this site is useful for learning and reviewing.

uPal: Associative Kanji Learning（Introduction article）

Using this site you can study the kanji learned by elementary school students in Japan and textbooks such as ‘Genki’, ‘Minna no Nihongo’ ‘Nakama’,’Yokoso’ and ‘Marugoto.’ More than simple a kanji dictionary, this site is more like a kanji database, complete with tons of example sentences and quizzes.