Before i start this tutorial, i just need to clarify something, which is that i wont be showing you how to setup the regular SDK to make maps for gmod.

So, im assuming your here to learn how to make maps for Gmod right? (I don't know why else). Well your in luck because this tutorial will teach you just that.

So the first thing you will need is the Source SDK, which can either be downloaded from the Steam tools section or, you can download this pretty neat modded version of the original SDK which has a less cluttered and facelifted UI (in my opinion) and makes it alot easier to configure for gmod, it does, however, make you download the Source SDK 2013 Multiplayer Base (Avalible in the steam tools section) instead to be able to setup the custom config (the custom config ). You can get the modded version of the SDK here: http://facepunch.com/showthread.php?t=1327883

Now that you have downloaded that, to set up the launcher to run with Gmod, you need to click setup customConfig and in the window that appears, check in the content to mount section Garry's Mod and then check Garry's Mod AND halflife2 in the FGD's to use section along with any other games content you want to mount. After you have done that, you then need to define a location where your VMFs (the file that the hammer tool (i will explain this tool later) uses to load the maps data) and BSPs (the file type that Gmod uses to run the actual maps themself) are going to be stored. I recommend placing the BSPs in the Gmod map directory and the VMFs in a folder in the Gmod map directory. You can place the BSPs and VMFs anywhere but i recommended that spot because thats the directory where the gmod maps are loaded and makes it a ton easier on yourself when testing your map.

Now we come to the final step of this part of the tutorial, which is as simple as clicking the button labled 'Hammer Editor' and then pressing CTRL + N in the window that opens. The not so simple part, however is making the map itself, which i will cover in the next few tutorials.

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