how to find library

Are you looking for your user Library? In Finder, hold down the option key and then click on the "Go" menu - your user Library will be listed. There's also a way, via Terminal, to permanently 'unhide' your user Library if you wish.

Clinton

Hidden by default. Launch Terminal, copy/paste the following:

chflags nohidden ~/Library

Hit enter. Your Library folder will now be visible in Finder.