well to install the mod you have to read the readme files. Most mods you have to import it as a product which is in the admin panel. they are really easy to just some time and read the instructions through carefulyl and all should go well.
Generate traffic? Hmm id say install this:
https://vborg.vbsupport.ru/showthread.php?t=135099
And find some other forums that would want to affiliate with you. that is always a good way to generate traffic.