How to Install Vehicle Addon - less than 2 minutes
With practice you should be able to this in about 20 seconds or less. This is the basics for anyone new. Ideally you would group addons into packages but that requires patience and some experience.
Tips: you can add the path to dlclist.xml in your favorites menu at the top.
Also, I left the warning dialog on to remind you that addons go in the MODS folder, not the game folder.