Sync your SharePoint Online Team Site with your OneDrive easily with the SYNC function in your team site.
1. Go to your Team site
2. Select the Library
3. Click the SYNC button
4. OK to Allow OneDrive
5. Select a target local folder to Sync to
Video instructions here Sync …
If that doesn’t work, go into your SharePoint Online document library, select Library and select Open with Explorer… use the explorer window pop-up to copy files to and from your SharePoint document library…
… then get on the phone to your Mom, and come check back later.