Good for perspective
Manga Tutorial- Head Direction by ~MermaidUnderSea on deviantART
Learn Manga Basics Female Hair styles V2 by Naschi
Eye Tutorial by *Simarlin on deviantART
Manga Tutorial Female Eyes 02 by FutagoFude-2insROID.deviantart.com on @deviantART
Hairstyle Adopt, text, woman, girl, hairstyles; How to Draw Manga/Anime
World Manga Academy — What is “foreshortening”? Well. in a nutshell, it...
I'm terrible at drawing hands, so this is pretty useful; especially how it does both male and female hands!