If you are new to PC gaming, did you know that steam allows you to mod certain games?
All you have to do is go to the game, click the steam workshop, find a mod that you are looking for or like and hit subscribe and it instantly goes into your game?
You may end up having to update your game though adding mods but it should not take long.
If you cannot find a mod you are looking for on there try Nexus mod and follow how it says to download and insert it. If you do not want to do it that way you can always download the vortex mod loader and it does it for you sometimes but you will end up having to go through and fix it. If there is an update for the mod and you are not using the mod loader you will have to do it yourself.
Another mod loader that we use is called thundermod manger which comes from overwolf but there is also a new site on overwolf called curse forge which is a great site to check mods out.