this is a tutorial that my freind made, its mainly for ms paint but i gave you the link for the page where she starts talking about ananomy [in the first page where she says fliping the face will help spot erors you can do that with drawings aswell just look at them from the back through the light [it will also help you with the position of the eyes]
thats baisicaly for the body and the tutorial for the body doesent last long
as for the face

eyes: are located in the middel of the head and are exacaly one eye apart the nose ushaly ends in the middel between the eyes and the chin[when angling your faces and tilting it conect it to the eyebrow[fore mails] and the mouth in the middel between the nose and the chin

hope this helped