Unhide your Lion library
You may have noticed your Library folder is curiously absent in OS 10.7 (Lion). What, you cry? Where did it go? Well, it’s still there but Apple has hidden it, presumably to keep us from injuring ourselves by meddling. Even better, I can show you how to un-hide it again!
Open your trusty terminal and run:
chflags nohidden ~/Library
and to hide it again, simply type
chflags hidden ~/Library.