How do i make a GMOD addon?

[tails_72]

I am new 100% to modding the closet thing i ever did was a texture pack in Paint.net that was near complete for Minecraft but never a mod i always wanted to so i have decided to start small and i want to make a gun type add-on for Gmod that adds a single weapon.
what do i need to do? I know i need to crate or reuse a model or something of sorts like that and do a little script maybe but where do you start and how is it implemented as a mod for the game. like what tools do i need to familiarize myself with :eng101:?

[Rubat]

[url]http://wiki.garrysmod.com/page/Lua/Tutorials[/url]

[url]http://wiki.garrysmod.com/page/Workshop/Creating_addons[/url]

[tails_72]

Okay the only thing i don't understand is what specific code (LUA) do i need for a weapon?

[editline]9th August 2012[/editline]

How do i create or chose or whatever the model? i have worked with a few 3D polygon programs...

[editline]9th August 2012[/editline]

Also i want to know how to make maps i know it is hard i want to try and i have to hope it doesn't involve Google Sketch-up because that has to be the worst map maker/ 3D program in the world.

[Rubat]

You can always download a weapon from [url]http://garrysmod.org/[/url] and use it as a reference.
To use a self made model you need to compile it first, so you can actually use it in GMod. You can find tutorials on YouTube or Google.

[ryanstraub]

[QUOTE=tails_72;37150317]

[editline]9th August 2012[/editline]

Also i want to know how to make maps i know it is hard i want to try and i have to hope it doesn't involve Google Sketch-up because that has to be the worst map maker/ 3D program in the world.[/QUOTE]

No mapping doesn't involve sketch up. Mapping uses the Hammer editor, and thats part of the source SDK that you should be able to find in your tools menu in steam.