Tutorial - Creating your first mod

Creating a mod for Custom Stuff is very easy. You only have to create a directory in .minecraft/config/CustomStuff/mods and name it CSTutorial. From now on this directory is called the mod's directory. Now start Minecraft, wait until it is fully loaded and then close it. There should be a few files and directories in your mod's directory.
The config.ini file contains configuration information for your mod. At the moment the only thing that is there, is the name of the configuration file for your mod that was created in the .minecraft/config directory.
The mod.js file is the main file of your mod. From there you are going to add your blocks, items, recipes, etc.
The blocks directory contains your block files.
The guis directory contains your GUI files.
The items directory contains your item files.
The tileEntites directory contains your tile entity files.
The worldGeneration directory contains your world generation files.
The textures directory contains the textures for your blocks, items and GUIs. It contains five subdirectories: armor, blocks, guis, items and models.
The scripts directory contains Javascript files. For example, if you want to use a script for multiple blocks, you can put the script into a script file in this directory. Then you can call this script from the different blocks. If you want to change the script, you only have to change it once and not for every block that uses the script.

That's it. You have successfully created your first mod.
Continue with: Creating a block