As far as I know, there is only the first exercise book in English too. You can also get in English, Kanji in Mangaland books 1 & 2. These books use a cartoon style of mnemonics. I have the books but only flipped through them a bit and haven't actually used them to study. I am working through Genki to get some grammar. It has supplementary audio discs which I have used a lot on my iPod to get the sounds of Japanese into my head.
