For some time now, I have created a few specific tutorials to help people who have asked me to solve problems they may have encountered. Some of these videos are a bit dated and it's possible that I didn't know all the subtleties of the world editor yet... If you have a special request, I am available to create other tutorials. Keep in mind that the first thing to learn is the basics of the world editor. This link will allow you to understand all this. ( 3DXChat World Editor Documentation ) If I can give you an advice, the keyboard shortcuts will allow you to progress more quickly and easily.
Follow this link and maybe some of these videos will help you !