HOW TO DRAW MANGA by The Society for the Study of Manga Techniques

HOW TO DRAW MANGA Volume 1 : Compiling Character (download)
HOW TO DRAW MANGA Volume 2 : Compiling Technique (download)
HOW TO DRAW MANGA Volume 3 : Compiling Application and Practice (download)
HOW TO DRAW MANGA Volume 4 : Dressing Your Characters in Casual Wear (download)