- From the OS X Finder, open a new window and go to the users Home folder (hit Command+Shift+H to jump to Home instantly)
- Pull down the “View” menu and select “Show View Options” (or hit Command+J if you like keyboard shortcuts)
- Check the box for “Show Library Folder” then close the View Options panel
- Navigate in the users home folder to see the newly visible “Library” directory
Taken from: http://osxdaily.com/2013/10/28/show-user-library-folder-os-x-mavericks/