[Swlug] Boot directory

[bill]

Hi all,

My laptop, which runs on Linux Mint Mate 19.1, is telling me that my
Boot directory is very low on space now. I have only 6.5 Mb or so left.
I am advised in the message that I can move some of the files to another
directory. That's very easy to say, but which files can I move without
causing the whole setup to stop functioning, and where should I move
them to so that the laptop still works? Can anybody help please? I'm a
happy user of Linux but a newbie regarding the technical side of things
- please speak to me in words I can understand!!

Many thanks :)

Bill