Tutorial:Modding tutorial

These tutorials range from teaching the first steps of modding to in-depth explanations of individual mechanics:

Modding tutorial/Gangsir — A simple modding tutorial that suits beginners well.
Mod structure — More details on how mods need to be structured in order to be loaded by the game.
Scripting — A small tutorial that focuses on run-time scripting and provides some info on how to use the story script.
Mod settings — A comprehensive tutorial about how to create and use mod settings.
Localisation — A tutorial about how to format and use localisation, which is how mods are translated.
Script interfaces — A small tutorial about script interfaces (LuaRemote) and custom keyboard shortcuts.

Modding FAQ
Prototype documentation
Scenario system — A save-based mod which can control map generation and gameplay
Factorio API Documentation — Documentation of the runtime api
Migrations guide — All information about mod migrations
Factorio data github repository — Tracks changes of the lua prototype definitions in factorio in between releases.

See also