Bring Your Home Folder's Library Back with One Checkbox in Mavericks:
Apple decided to hide the Library from its users in recent OS X updates, but in Mavericks you can now change that with a simple checkbox.
In the past you had to enter a Terminal command with every little system update:
chflags nohidden ~/Library
With OS X Mavericks, you can just navigate to your home folder, press Command+J to bring up the folder settings, and check the box next to "Show Library Folder" instead.