Copyright law is a mess, but there are archival services, like the Internet Archive, that can effectively advise someone on how they can, in a way that does not

Copyright law is a mess, but there are archival services, like the Internet Archive, that can effectively advise someone on how they can, in a way that does not cause one to risk legal liability (a problem much more real to the average person than generally-theoretical and mostly-breathless chances of criminal charges) to them, preserve those artifacts for the future.