Google Drive is an App used to access, organize, and share all your files from any device, anywhere. Google Drive is available to you online and as an application download. With Google Drive, you will always have a back-up of your files saved in the Google Drive folder. You have 5 GB of space on your Drive, files saved as Google Docs do not count toward your total allotted space. This article provides user more information about Google Drive.
Google provides tutorials on using Google Drive on their Google Drive Help Page.
Installing Google Drive on your computer will allow you to easily access your non Google Doc files. It will create a folder on your computer that will automatically sync with your cloud. Please follow the instructions on Installing your Google Drive on your computer.