One of my favorite features on my Mac is the ability to place 3 fingers down on the track pad and push in an upward direction. This sorts all of the programs I am working in and displays multiple desktops.
You are able to add multiple desktops views to your Mac. This allows me to have the internet in one desktop, my iMessage chat in another and iMovie in a 3rd. I also like to always have an app free desktop so I can have easy access to the screenshots and files on my desktop.
Place 3 fingers down on the trackpad and push up to enable expose and spaces. If you hover your mouse in the upper right (or on some Macs the upper left) you will notice a plus tab allowing you add additional desktops.
Click on the desktops along the top to switch views.
In addition to allowing me to switch desktop views, I can find windows hidden behind windows. If my iMessage is behind my Safari browser, I do not need to move the Safari window to switch to check my messages. Push 3 fingers up on the trackpad and click on iMessage to bring it to the front.
3 Fingers Down
Swipe your 3 fingers down on the trackpad instead of up and the Mac will sort multiple windows in the same program. For example if I have 3 Safari windows open and iMovie, 3 fingers up will show me the Safari windows and iMovie. 3 fingers down however, will separate out the Safari windows