user guide needed for lms & internet

I am trying to come up with a basic guide to help a unique user group on our LMS. These users are not employees but contracted externally. Many don't have much basic internet experience. I would like to find a tool as a self help for users: recommended browsers, how to clear cache, how to turn off pop up blockers, with mobile too. Our IT department doesn't support these users but they need to use our LMS. If anyone has  a similar tool/guide to share or knows where I can find one please let me know.

 

Thank you.

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