First of all download this file and unzip it in a folder:
https://steamcdn-a.akamaihd.net/client/installer/steamcmd.zip

Run the file, then you need to type the following to create a folder, where the server files will be deployed. Here it will be called "css_ds"

After that, we will log into the SteamCMD by using the anonymous login:

After SteamCMD has successfully we will start downloading the server files.
It might take some while, depending on your internet connection.
After the download has finished you can close SteamCMD by typing
into it.

The best option is to create a .bat file in your "css_ds" folder (e.g. start.bat):

Info: "-secure" means that your server is VAC secured, otherwise use "-insecure" to disable VAC.
Maxplayers logically means how many players can join the server.
You can also change the port with "-port 27015"
Map defines with which map the server starts.

It is time to conifgurate your server. For this purpose I created a pre made cfg, which can be downloaded over this link:
https://raw.githubusercontent.com/Zeromix9/Server-Creation-Tool/master/Server%20Configuration%20Files/Counter-Strike%20Source%20Server%20Config%20English.txt
Backup Link:
https://pastebin.com/e3f89ijz

Now you only need to put it into:
Remember, that it needs to have this name: "server.cfg"

Thats it. Have fun!

Note:
Please keep in mind that you need to open your ports so that other players can connect or you simply use a VPN-Tool like Hamachi.

At first you will need "Metamod Source" you can get it from here.[www.metamodsource.net]
You have to unzip the files in the following folder:

By now there should be an "addons" folder.
Now you need Sourcemod, you can get this here.[www.sourcemod.net]
You can also get the Plugins from there later.

Also extract that in this folder:

For the following you will need your SteamID, you can find yours out here:
http://steamidfinder.com

To configurate an admin, go to:
and open the

As you can see, you just have to add something like this:

You can see the flags in the
file.

If you have configurate it, write in the chat "!admin" or in the console "sm_admin" to open the menu.

And that´s it! Have fun! ^_^

I can not see my server / No one can connect to my server
Please make sure, that you have opened all the required ports in your router. If the everything is set correctly, but the problem still occurs, please contact your internet provider.
Or look for your router model here:
https://portforward.com/router.htm

Is there another way instead of opening the ports?
Yes, you can also host your server through a VPN network like "Hamachi". Of course only the people in the VPN network will be able to join the server then.
If forwarding your ports doesn´t work, please contact your ISP, i won´t be able to help you.

How can i change my server port?
Just edit the bat file with "-port 27015"

The SteamCMD download failed! What should I do now?
Mostly you just need to retry the download, then the problem should be fixed.

How do I update my server?
Just open the SteamCMD and login again, then retry the Step "Downloading the files" it will be checked which files need to be updated.

To automate these steps to setup/upgrade a server, i created a tool, the group can be founde here:
http://gtm.steamproxy.vip/groups/ServerTool

The tool itself is hosted on Github, which can be found here:
https://github.com/Zeromix9/ServerTool

I hope, that will help you in the future!

If you like, you are also welcome to leave a small donation.
https://paypal.me/Zeromix