As far as tutorials go, your best bet would be to search for some on Google. I have found that the best method is by creating a rough draft using pen and paper. Also, check out this tutorial from PrintPlace - How to Design a 3D Logo in Illustrator
You can search google for tutorials. that would be the easiest. you can also check out my work at http://www.lanotdesign.com/ just in case you decided to have it made customized for your needs ^_^