Start off 2017 with a clean desktop. It's easy to store frequently accessed documents on your Desktop but if you never clean them up, having a lot of documents there can slow down your Mac.
If you've dragged photos to your Desktop from the Photos app (to print or share, for example), put them in the Trash if that's been done. Or, if you have photos there and aren't sure if they're in the Photos app, drag them to the app. It will notify you if they're already there and then you can delete them from your Desktop.
You can also use the built-in organizing tools in your Mac by moving things into your folders (Documents, Photos, Movies, etc.). You can also create your own folders to organize documents and even keep shortcuts in your Finder sidebar or on your Dock.
We can help you organize or sign up for our January 19 class on "Getting Started on Your Mac"!