You want to be able to disable some of those links?
1. Go to Office 365 Home screen (https://portal.office.com/Home)
2. Go to Admin > SharePoint
3. Go to Settings
(or skip steps 1-3 and just type https://{your company name}-admin.sharepoint.com/_layouts/15/online/TenantSettings.aspx)
(or skip steps 1-3 and just type https://{your company name}-admin.sharepoint.com/_layouts/15/online/TenantSettings.aspx)
4. You can now show or hide some of those links
