Hi ultracougar!
There are some AC3D tutorial movies you can find here:
http://www.inivis.com/tutorials.html
Also, the manual has a lot of stuff in it and is pretty well illustrated:
http://www.inivis.com/ac3d/download/ac3dman64.pdf
This is probably one of my favorite tutorials. It's very brief, but it really made some of the ideas "click" for me: (The tutorial is for Maya, but you can do exactly the same thing in AC3D)
http://www.3d.sk/tutorials/Modeling_a_foot_in_Maya.htm
This tutorial is also very popular:
http://www.3dtotal.com/ffa/tutorials...c/joanmenu.asp
Everybody here has different methods they use when they model--if you dig around the forums you can see lots of the nifty things people have made. Personally, I like the "box modeling" method. You start with a cube, and keep slicing surfaces and extruding faces until you get the shape you are looking for. (like the foot tutorial I linked)
You can find 3rd party plugins for AC3D here:
http://supercoldmilk.com/ac3dplug/index.html
And also here:
http://www.independentdeveloper.com/...ls_and_plugins
(A number of these already are included with AC3D, so check before downloading as the ones with AC3D are the ones you want when in doubt.)