Hi Michael...and welcome to PowerSHAPE..oops i should say Delcam Designer
There are quite a few tutorials on the Delcam website that you can follow to have a first introduction.http://www.delcam.com/software/powershape-e/tutorials/
This will give you a good start on wireframe / surface and solid design.
You will then be able to play a bit more and learn how to integrate the reliefs made in ArtCam within Designer (Mesh modeling)
But if you want to be a 100% efficient on PowerSHAPE / Designer, i would recommend to take the training with Delcam.
In the meantime, if you want some hints and informations, feel free to ask.