How do I clear the cache for my browser?

It depends on the type of browser, this site has instructions for all the main ones

I can't remember my SharePoint web site address

Just go to https://portal.microsoftonline.com log in and click on the Sites link at the top of the screen.

Which browser should I use for SharePoint?

Internet Explorer 10 or 11 are best, Safari on a Mac

I am getting errors when I try opening files like Excel and Word

a) try clearing the browser cache (see above)
b) make sure your computer has all its updates
c) do a repair of office

 

Teach me videos and documents

Add a bookmark button of our homepage to Internet Explorer

Device Settings