Many posts on this site utilities the users Library folder. This is a folder that many applications and system apps use to store information such as preferences, cache files and other files and folders. Todays video is a quick video on how to access this folder. In the latest version of Mac OS X, the guys decided it would be a good idea to hide this folder from view. It is still easily accessible however it takes a quick keyboard trick.
The second half of the video discusses how to show the Library folder permanently by using a Terminal command to remove the hidden aspect of the folder.