Au contraire, Alector, I think it is a good thing if artists give tips to each other.
Here are a couple of tutorials I found on the web.
How To Draw Manga - I'm almost certain this has already been posted on this board, but I did a search for it and couldn't find it. Oh well, can't hurt to post it again.
Merekat's Tutorials - Kristen Perry, aka Merekat, is a serious computer artist; she has designed and drawn several commercial posters. Se's got some ace tutorials for people with the hardcore colouring software (like Photoshop and Adobe Illustrator).
That's a good idea, Alector, about 'how to draw bodies, etc' for beginners. I might have a go at making something along those lines.