Getting Started
How to Set Up Your Garry's Mod (GMod) Server and Addons
Set up your Garry's Mod server: gamemode, map and slots on the Startup tab, the server name and password in server.cfg, and addons from a Workshop collection.
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Garry's Mod (GMod) is Facepunch's physics sandbox on the Source engine: no objectives, just a spawn menu, a physgun, and a tool gun for welding props into whatever your group thinks up.
Set up your Garry's Mod server: gamemode, map and slots on the Startup tab, the server name and password in server.cfg, and addons from a Workshop collection.
Two ways onto your GMod server: find it under Find Multiplayer Game in the in-game browser, or connect straight to the address from your panel in the console.