a vicorius, victorius ,victim of vital, vigelante vigilance

I have a question for asll members who have gmod the question is thus "have any of you used gmod.org to download mods" if you havent keep reading and ill tell you how.
first download a program called WinRaR & install it then log in to gmod.org through steam (there is a link on the webpage) download something & select to open it with wiwrar after its done wiwrar should pop up with a window with the file in it (dont worry about readme's although you should read them) then right click on the file and click "extract seledted files to" then navagate your way to steam on the little window that pops up (wherever youve put steam find it! ) then click steam apps/username/garrysmod/garrysmod/addons.
replacing username with your username.
it shuld work & good luck