The files present in the bin folder will be copied in /usr/local/bin

The folder help, script, translation will be copied in /usr/local/lib/irc

I recommend to use the script freddy, to do that, from irc, type /load 
freddy OR from your .ircrc (in your home/) add the line /load freddy

The folder doc contains the manual and some extra docs. Please copy 
the manuals (ircbug.1, ircII.1, query-pr.1) where they belong, here 
that will be in /usr/local/man/man1

that's all.

