I was sorting my old mail and found one of these old emails I received from my professor. They include links to useful pages that helps you learn Kanji and verb conjugations. I think the second and third one are useful only to Mac Users, because they are mac applications (the last one is actually hypercard), but the first one is useful for anyone who wants to study Kanji.
Nakama’s Kanji study page
Kanji Invader
Vocabulary conjugation