Learn is free. At least it's author, some unherad of guy named Brian 
Kernighan is making it publicly available on the Net through his
web page :-)

	http://cm.bell-labs.com/cm/cs/who/bwk/

It's been there for a long while.

I had a similar problem with novice users some years ago, and remembered
good old faithful 'learn' from Ultrix. I also remembered having compiled
it at some point in OSF/1. So I went to the net and started a search, and
lo! there it was at Brian's page.

I ported it to IRIX, which is where I had said novice users, and being at
it, to Linux as well. I must have the ported code somewhere but I'm on
Holidays now.

A look at AIX and Tru64 revealed it is still there in new versions of these,
which proved great for me: DWK code did not come with all the lessons I had
used before, and I could just copy the lessons from these systems over and 
use them with the port.

Therefore, yes, it is free, it is available on the Net, I have already ported
it to modern systems, and the lessons are still distributed with
some commercial UNIX variants should you need them.

				j
-- 
	These opinions are mine and only mine. Hey man, I saw them first!

			    José R. Valverde

	De nada sirve la Inteligencia Artificial cuando falta la Natural