Reddevil99,
in TE4, to install Mods, you'll just have to copy files in the correct folder. However, right now, not everything is moddable, and there's barely any available Mod.
in TE2013, you need to be able to edit some files, which can get indeed a bit complicated.
For both games, to create Mods, you'll have to be able to dig into complicated stuff...
