a very detailed turorial for rhino3D can be found here:
Wunwinglows Rhino Tutorial, Sukhoi Su7
For prices you may check US-dealers for it. As far as could I find out
the price for the complete package (be sure to get hold of a student's
licence) is from $ 195 to $ 495. (The commercial licence is $ 1,695).
McNeel Rhino3D offers two comprensive training books and also a comprehensive
tutorial for marine design.
(Other tutorials available are irrelevant for card modelling).
As said before: Rhino3D is absolutely perfect to design the model's
shape and outline and to unroll all surfaces. To take material thickness
into account is a challenging task within the Rhino3D designing process,
because Rhino3D estimates a thickness of "zero" as default.
As always practice is necessary
See attached some pictures having been filed during the design
process of the Saint Lorenz Cathedral in Nuremberg ....
(The first five are renderings from the virtual 3Dmodel)
Cheers
Thomas