ohh, it's very simple. You need winrar, and when you have got it, you fownload a file (mod) and right click on extract this file, to you mod folder ( you need to put the winrar file in the mod folder and then extract, and the mod folder you find like this: Documents/eurotrucksimulator2/mod . To make the mod work in game, you need to cross of the mod you installed in the edit box in the game meny :) hope this help my friend :D

i wish i knew how to mod my game