Here are a few links to Lightwave tutorials that I used long ago, when I first started.
(I wonder how many are still up and running)
http://www.ap3d.com/tutorials (Space setup, spaceship detail)
http://www.speedline.ca/lightwave/htdocs/ (3D Animation)
http://www.newtek.com/education/tutorials/ (BIG list of other tutorials)
http://root.wpcusrgrp.org/~scameron/lightwavetutorials.htm (BIG list of other tutorials)
http://www.speedline.ca/lightwave/tutorials/tutorial2.html (The earth)