Hi John.
Welcome to WTP forum.
Take a look at the vids Lloyd has made regarding the software. You will have a better understanding of what goes into making a segmented project.
If you have a woodclub in your area, I would suggest you join it. Getting hands on instruction on the lathe and building a segmented vessel would be beneficial.
Do a search for books on segmented turning. Books from turners like Malcolm Tibbits, Ray Allen, would provide some good references. Search the web for turning vids.
Last try out WTP different software. It is great and makes the process easy as far a designing.