As you know, Apple has chosen to hide the user’s Library folder in Lion. We were quickly told that we could hold down the option key when accessing the Finder’s Go menu to see the Library. MacWorld published an article listing 17 other ways to access that library folder.
The article lists ways to view it occasionally, ways to view it frequently but keep it invisible and ways to make it permanently visible.
Then one comment added a 19th method.
See the full article here: http://www.macworld.com/article/1161156/view_library_folder_in_lion.html