installing Gnome themes

Sat Sep 27 22:22:32 UTC 2014

Ok guys and gals, here's another Ubuntu 'newbie' question. I'm using
Gnome and want to install some alternate themes. I can go to
'gnome-look.org' and download them all day but after that I'm totally
befuddled.

Any advice for this old man?

Thanks

-- 
Chris
31.11°N 97.89°W (Elev. 1092 ft)
17:20:11 up 1 day, 18:42, 1 user, load average: 0.02, 0.19, 0.28
Ubuntu 14.04 LTS, kernel 3.13.0-37-generic