A tip: Don't study kanji in isolation. It is easier to remember how to read kanji if you learn Japanese vocabulary using the kanji. Plus, you'll build your Japanese vocabulary at the same time.
To learn Japanese online, nothing beats online lessons at Nihongo-Pro. Your professional, experienced teacher will build lessons customized just for you, to fit your Japanese goals and your learning style.
Plus, with a free trial lesson, there is absolutely no risk. Get started learning Japanese online today.