My greatest advice to those concerned: Start archiving. If you come across something you believe is valuable: make a copy.
If you follow a guide on how to install and configure software and you found it helpful: make a copy.
If you come across a video you really enjoy and find yourself coming back to again and again: make a copy.
If it means anything to you: make a copy, or you'll wish you did.
@rick @n4 If you’re a Mac/iOS user, I can recommend DEVONthink from @devontechnologies
It will store anything from Markdown documents and archived web pages, to videos and audio. Everything is indexed and searchable, and you can make it sync automatically between all your devices. The desktop app is a little daunting at first, as it does a ton of other stuff, but you can ignore most of the menus and advanced features and just dump info into it with the OS’s share button, and find it with the search box.
Also, it is rock solid. You can put gigabytes of data into it and it will stay lightning fast.