This is a classic text that has been left quite under-appreciated. It offers a semiotic analysis of information, but the pragmatic theory of information extends beyond the semiotic tradition. In my view, this is one of the best and most sophisticated accounts of information.
The book is out of print, so check your institution library. A few left on Amazon.
The Meaning of Information
Volume 20 of Approaches to Semiotics [AS] Series, ISSN 0066-5576
Mouton De Gruyter, 1970