Using My MacBook Pro Is it possible to send files to my iPad Air?

You can use Dropbox.

Install and run iTunes on the Mac. Plug the iPad to the Mac, select it on the Devices section (do a Show Sidebar in the View menu if needed), tap on the Apps tab on the main window. Under the Apps display (where you can install/uninstall the apps and rearrange them on the iPad's screen), you'll see the File Sharing section. There you will see all the installed apps that accept files to open. Select one and you can Add... files to it. Or you can select a file already on the iPad and press Delete on the Mac to remove it.