Yes, Source SDK Comes with all the source games
To download Source SDK, go into to steam > tools > Source SDK. You must have a source game to have SDK availible.
Use the Source SDK tool Hammer Editor.
Source SDK is not avalile on he Xbox 360 consoles.If you own the PC Version of Left 4 Dead 2, you can access the Source SDK by going toLibrary> ToolsThen select "Left 4 Dead 2 Authorizing Tools".This is the Source SDK that is used for Left 4 Dead 2.If it is uninstalled, allow it to install as it wont take that long.Then double click it and when the screen for it comes up. Select the Hammer Editor Tool to make a map.
You can download them on various site. try Google! But the SDK you might want totally depends on what you're planning of making I recommend using Source SDK. It's very powerful and easy to learn. Just buy any game that uses the Source engine (Portal, Half-life 2, Team fortress etc.) and You will receive the Source SDK kit for free.
I believe a SDK program (Source development kit) Or a graphic development software
you need source sdk
You should really be posting this on the Steam Community Forums, you would get a much better response there. :)
You can download them on various site. try Google! But the SDK you might want totally depends on what you're planning of making I recommend using Source SDK. It's very powerful and easy to learn. Just buy any game that uses the Source engine (Portal, Half-life 2, Team fortress etc.) and You will receive the Source SDK kit for free.
Source SDK (Software Development Kit) is a software package developed by Valve Corporation for creating and modifying content for games that use the Source engine, such as Half-Life 2, Counter-Strike: Source, and Team Fortress 2. It provides tools, libraries, and documentation to help game developers and modders create custom maps, game levels, and modifications for Source engine-based games. Source SDK includes the Hammer level editor, which allows users to design and build 3D environments, as well as other utilities for creating textures, models, and other game assets.
Refresh your source sdk content, make sure you have CS:S installed first and is a legitimate copy. Then refresh SDK content, this should fix the problem. If not you can create your own CS:S build by clicking "Edit game configurations" and then click add on the window that comes up. Now you need to type in any name for your CS:S build then in the box below browse to the location where CS:S is installed.
You can make a CS:S map by using Souce SDK's Hammer World Editor if you have a steam account and CS:S you already have SDK, to load it to your PC just go to your steam library, then to the tools section and under tools should be Source SDK once you download it (it shouldn't take as long a CS:S to download) go the the Hammer Editor icon and then design your map. If you need mapping help you can go to Interlopers.net or developer.valvesoftware.com, if you own HL or team fortress you can also make maps for those as well. Hope this helps :)