Here's a few tutorials on beginning modelling. http://www.eharm.net/shop/freeware/orbiter/developer/model2flight/model2flight.html
[ame="http://www.orbithangar.com/searchid.php?ID=2729"]Anim8or tutorial: How to model a plane[/ame]
[ame="http://www.orbithangar.com/searchid.php?ID=2730"]Anim8or tutorial: How to model a rocket (Lesson 2)[/ame]
[ame="http://www.orbithangar.com/searchid.php?ID=2731"]Anim8or tutorial: How to make a building (Lesson 3[/ame]
Any Anim8or tutorials are good for learning to model, but most aren't related to texturing in Orbiter.