I'd recommend the "
How to Draw MANGA" series- most were originally written/illustrated by Japanese manga artists and translated into English. A few of the books go more into depth about how to actually draw in the style while other books delve into more about how to create comics/stories.
Now, if you're interested more in making manga/comics, I also recommend:
- "Pen & Ink" released by DMP;
- "How to Draw Shojo Manga" released by Tokyopop;
- "Shojo Beat's Manga Artist Academy" released by VIZ;
- "Shojo Manga Techniques: Drawing Basics" and "Shojo Manga Techniques: Writing Stories"- both released by DMP;
All written by manga artists and some of the above contain neat interviews with popular manga artists like Watase Yuu, Oh! Great, Yasahiro Nightow, Satoshi Shiki, and others.