Hello. Today I have decided to make a Sides Mod but couldn't find a tutorial while searching.

Question: Are there any tutorials on how to make a Sides Mod? If yes,can I have a link to them? Are they in the Documentation?

P.S I just downloaded the Mod Tools,do not know anything at all about modding.

From the FAQ: Custom Side: How To

Be sure to look at the FAQ before asking for help.

I saw that,thought it was for maps only.

Thanks!

the v1.3 patch came with a lot of documentation stuff. Make sure you checked at installation "include the detailed documentation" and you can find them in the addon/v1.3 folder. There are some more information about how to make an era mod instead of adding custom sides to a single map. But you will need the link above, too.
The "Custom Side: How To" tutorial is about how to make the sides and how to set them up correctly
and the v1.3 documentation is about how to add your sides to every stock map.
But i recommend to try your sides on a test map first.