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