It's really helpful for daily work on your computer to have your Google Drive syncronised to your computer. This way when you create new files you can immediately have them popped into the correct folder in Google drive ready for access from any other device, or by your co-workers. 

First go to https://google.com/drive/download and click the Download Drive for Desktop button. 

Follow the download on your computer and then double click to open it. 

The system will ask you a series of questions, click next through these to accept all the defaults. 

Once installed it's advisable to restart your computer. 

You will then be greeted with a Sign in with Google window. Click through this, and login with your Google Workspace account. 

Once installed you will see a Google Drive icon near the clock on your screen (top right on Mac, bottom right on Windows).

To access Google Drive open your your Mac Finder, or Windows Explorer window and you will see Google Drive on the left hand side.