I have just completed my new Kindle book: 027-2012 Introduction to 3D Modeling (Short Sharp Manuals) [Kindle Edition]. This Kindle ebook is based on the Vector-workout Subscription manual for February 2012.
In Vectorworks you can use different ways to create 3D work, but for all of them there are basic principles that you have to understand. Working planes are the basis to start a 3D object, whilst extrusions are the primary tool to create a 3D object. Once you understand this it all gets much easier.
You can find more information about this ebook at the Kindle Store.