Typographic conventions
(maybe add a note for dopey people, don't cut and paste add your own network path - DodgyBrothersEngineering)
If you see something that looks a bit like
ls -l
(Notice the bullet & the grey background.)
It is likely a command line. You can triple-click it, then copy & paste it directly into a terminal.
If there is a part that's ALL-CAPS & BOLD, this is a part of the command line you'll probably need to edit for your particular usage.
i.e.:
cp FOO.BAR FOO.BAR.bak
(Really... if you see anything in bold, think about it before just pasting.)
Sometimes, there'll be whole scripts to paste into a file on your machine. (I like vi as an editor, but use whatever editor you like.) When a script is posted, it'll be formatted like this:
# This is a rather silly little bash script...
echo "This script is silly."
echo "It doesn't do much."
echo
echo "In fact, it just tells you it's silly..."
Just copy the whole thing & paste it into your editor in a terminal...
(Unfortunately, I haven't found a way to do the BOLD & ALL-CAPS thing inside the scripts, but I'll try to make notes to help.)