i think this tutorial will help you out on sculpting and modeling organic and hardsurface props https://www.thegnomonworkshop.com/tutorials/creature-modeling-for-production
poopinmymouth's character tutorials are really good he has video tutorials that include moveable eyes and a moveable mouth. check it out www.poopinmymouth.com
There's Ed Harriss's website (http://www.edharriss.com/), and the large number of tutorials that come with XSI itself. Check www.xsibase.com should have tutorials also.
Hey! I’m excited to share this new tutorial, where I'll guide you through the entire process of creating a stylized rifle for video games! We'll cover everything from concept to final render, breaking down each stage to make it easy to follow. https://www.youtube.com/watch?v=yHCIAm8WyYw Feel free to reach out to me if you…
BenHenry use this: vtools and there is a brief tutorial on how to set them up here: http://www.nextgenhardsurface.com you have to sign up to see the tutorial.