Can you tell me how or a simple example for me? For example, type / kit. I will get the initial equipment and food. For new players

Check the documentation: https://umod.org/plugins/hw-kits#documentation

I loaded into the server, but I created the kit / kit, and then nothing happened, or it might not be done properly

To create a kit you must type:
/kit add start
This will create an empty kit called start.

Then it should display when you type /kit. To modify the kit please read the documentation.

For example, I created / kit add start 
How do I put the initial items? Can you give me an example?

I want you Print the sample order / kit and get the item to start playing.