File system has run out of space, it says 0 space. How can I put it right? I can't watch my tutorial videos as they keep crashing, and same with Youtube. I'm not very savvy when it comes to a computer and haven't a clue what to do to put this right!
Type "sudo apt clean" into a terminal. It will ask for your password so type that in when prompted.This will clean out a cache and may get you working again but you probably need to see where all your space has gone as per the comment by @ajgringo619. If you need help understanding the output of those commands just post again. Uninstalling any programs you don't need will also help.
sudo apt clean sudo apt autoremove --purge
These are the two easiest steps, read the article for the other three steps.
Use this command to see the size of your cache
du -sh ~/.cache
Mine is only 1.3 GB but others are reported at 13 GB here:
Be careful following the advise in this Q&A.