Today, 13:41
Lets start with small steps. there are many different kinds of modding, form simple(er) things like missions and even modifying already existing things which would not involve actual modelling. If you really want to build, i.e. model things, buildings would be the easiest. gmax is the model making tool used by CFS3. I will send you some info on modelling if I get time , but you could also even use Google to fine out what things like dds files are. What many people, including me do, is look at all the folders and files in CFS3 and see how they are connected and what they do. I think Daiwilletti basically did that over a course of years to do all the good work he did. Also refer to all the sdk files for a start.