Cleaning up your storage
Start by right-clicking the Trash and choosing Empty Trash. Now choose old files and folders you no longer need and trash them. DaisyDisk (daisydiskapp.com) helps here. It displays your Mac’s storage as segments that show what’s using the most space. (The website version has features not in the Mac App Store version.)
Check your Music, Movies and Pictures folders. Remember that images in iPhoto must be deleted from within the app, which has its own Trash (choose iPhoto > Empty iPhoto Trash). If you’ve already moved to Photos, you can tell it to optimise files for available space. In its preferences, choose iCloud and then Optimize Mac Storage.
Monolingual (bit.ly/monomac) is great for removing unused languages from OS X. Often the biggest file hogs are old and littleused apps. AppZapper (appzapper. com) can removes application support files and preference files along with the app.