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=apropos

'help' is already the shell's built-in help function in most cases. That'd be a poor choice of alias.

There 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.

The same thing if someone does not remember there is a right mouse button?

It's right there, in front of them, all the time

Then you fire him and hire someone else.

Then that person is the wrong person for the job.