updating one's font path .. & adding a man to manuals

[daemonfowl]

Hi everyone !

I'm sorry again to ask such a newbie question .. seems everlasting ..
When I install/compile new fonts , there is a post-install message that come afterwards & I seem to always miss the tweak :

You may wish to update your font path for /usr/local/lib/X11/fonts/ubuntu

so how would I update my font path ?

a similar situation when I install some package and as there is a resulting new man for that package .. I'm asked ro add the related manual to local manuals ..