Ok these are NOT FREE tutorials. Found it while looking for some 3dsm tutorials. If you have money to spare, you can buy the dvds or watch the samples. Prices range from 10USD to 90USD for DvDs.

http://www.thegnomonworkshop.com

This is a dvd I thought you might like. View samples
http://www.thegnomonworkshop.com/sto...reature-Design


References: if you can afford it.
male:
http://www.thegnomonworkshop.com/pro...figure_02.php#

female:
http://www.thegnomonworkshop.com/sto...le-Figure-V.2A

skull:
http://www.thegnomonworkshop.com/sto...Artist-Version



Here's some free tutorials: Some are useful, others are things most ppl know.
http://www.thegnomonworkshop.com/sto...-Tutorials-All

Does require registration, but it'll talk about 1 min.
Zombie head Is interesting. Zbrush.
Part 1.
http://www.thegnomonworkshop.com/sto...KI-FREE-06.php
Part 2.
http://www.thegnomonworkshop.com/sto...KI-FREE-07.php
Part 3.
http://www.thegnomonworkshop.com/sto...KI-FREE-08.php

Want to learn and willing to spend a few bucks, here's you go.