This is the Tutorials Section of Homeworld Resource. Here you find many tutorials relevant to Homeworld and Homeworld: Cataclysm.  To build your Homeworld Mod I would first start by learning each of the various files associated with the model itself and then learn how to create your model around such characteristics as the Parameter Files can be likened to the guts of your model with the model, materials and textures applied being the hull that surrounds your Ship Parameters.

Ship Parameters are files created that tell the ship to perform a particular function such as firing a weapon, launching a probe, exploding etc. Without these files your model would just be an empty wireframe and nothing more.

I have arranged the files in order that I learned how to edit them and after much thought re-arranged them to build a model from the keel up.

Building your Homeworld Model is the same as building any other type of real world model. You build the machinery first and then the hull around it.

You will also learn how to create maps for Homeworld and Homeworld: Cataclysm here as well.