Look here for assistance in modding Napoleon: Total War.
Ask questions on all aspects of mapping, like editing startpos.esf, creating battle-maps etc.
Ask questions about skinning, modeling, and animations for units, editing building models, and all 2d graphical editing.
Ask questions on sound & other media here, from music, voices to fx to in game movies, etc.
Ask questions about all text editing and scripting aspects of the game, from editing unit stats to changing the AI and editing scripted events.
Ask here any questions which do not fall into the other categories, or which cross categories.
This is where you'll find all of the tutorials, modding tools and resources, official and unofficial, for the game.