The information provided below will walk you through making your hidden files and folders visible.
Option A: The Keyboard Shortcut (Fastest)
Open Finder and go to your Macintosh HD or User folder.
Press Command + Shift + Period (.) on your keyboard.
The hidden files will instantly appear. Press the same keys again to hide them when you're finished.
Option B: The "Go" Menu
Click on your desktop to ensure you are in Finder.
Click Go in the top menu bar.
Hold down the Option (Alt) key on your keyboard.
You will see the Library folder appear in the list. Click it to open.