But what if one doesn't remember the `apropos` command?
apropos apropos
if you forget that apropos apropos apropos
Recursion solves every problem;-)More seriously: You can alias it to something you can remember, for example:
alias help=aproposThere are a small number of seed keywords which are ueeful to know. 'help' (shell), 'apropos', 'man' (online manual), 'info' (GNU documentation), and dwww (local documentation presented through a Web interface, available on Debian-based Linux, see https://ostechnix.com/dwww-view-complete-debian-documentatio...) are among them.
Knowledge requires a certain baseline.
If that's too much ... perhaps a GUI is in fact advisable.