You might prefer to use electric help instead of help, via:
(global-set-key "\C-h" 'ehelp-command)
Electric help mode does the following.
If you use electric help often, you will find that Emacs often gets ‘stuck’ in Electric Help. viz. you keep seeing the message: “
Space to bury the help buffer, Press R to retain it >>>” or “
h for help ...” in the echo area, long after the electric buffer is dead.
To get rid of this, simply invoke electric help again, say by
‘C-h f endp’ and press
‘r’ to retain the buffer.