Yes, you can definitely make a module. All the info you need is here. This is my advice to you...
#1. Decide whether you want to make a custom module or an extension of the main module.
This is a really important step because The Larian video tutorials assume that you are working within the main module. If you want to make a custom module, then you have to unpack the main module folder with lstools and paste 2 key files into your custom module for the Larian tutorials to work (see #2). I made a custom module because I wanted my own unrelated mod. I have no idea what modding the main mod is like. But it is very possible to make a custom module with no scripting experience, but getting it set up will be frustrating at first.
#2. If you're making a custom game, unpack the main files using LSTools.
Thread here:
http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Main=63830&Number=558625#Post558625Watch Burgee's video tutorial here: (
https://www.youtube.com/watch?v=t_PpeyUeWE0)
#3. Watch the Larian tutorials.
Here is the link: (
https://www.youtube.com/playlist?list=PLE13woN-fNgu6IuHZguk-VJE6xWCHh9bJ). These tutorials are great! They teach you how to create a map and decorate it. You may encounter difficulties once you reach the video about scripting if you are creating a custom module and haven't unpacked the main folder yet (see #2).
#4. If you're making a custom module, read through my forum posts.
Here is my history:
http://www.larian.com/forums/ubbthreads.php?ubb=userposts&id=37024&view=posts&page=3I've basically asked every noob question about scripting and the toolset already so you don't have to

! I might eventually try to compile these basic foundation scripts into one document, but for now you have to sift through them. I requested scripts for how to make enemies hostile, how to make global dialog work, how to teleport the characters in dialog, etc. There are enough scripts here to make a full module. It might not be fancy, but it will work!
#5. Read through Burgee's posts.
History here:
http://www.larian.com/forums/ubbthreads.php?ubb=userposts&id=37380&view=posts&page=1. He writes a few tutorials, posts some scripts, and answers a bunch of questions.
#6. Post on the modding forums for any other help you need.
Extra Resources:
Burgee's other videos:
https://www.youtube.com/channel/UCdcbStkw_tk9rASRXoS9K-QMaking a Custom Mod: - Roguelike:
https://www.youtube.com/watch?v=7UExcQhpALQDivinity WIKI - not updated:
http://www.divinityengine.net/index.php?title=Main_Page