Want: More Flat Rides, Carnival Rides, More 3-D Objects, and possibly a GUI for Ride/Object Scripting.....

Hello, I'm new to coaster crazy, I'm asking for help to download coaster tracks for No Limits Coaster. I'm developing new tracks but I do need help in creating 3DS Object for No Limits Coaster. Can anyone send any help for Freeware Links to Software in creating objects.