I am really looking forward to this release. I served in the military in the 1980's and still fondly remember the heady days of Microprose and computer games that had exhaustive manuals. With that in mind here is a link to download the Red Storm Rising manual in .pdf format:
http://replacementdocs.com/download.php?view.2474
The sections near the end of the manual cover political and strategic ideologies. Sub tactics and weapon platform descriptions are also covered in pretty good detail. If you are new to 1980's submarine weapon systems and tactics, or would just like a refresher this is a good read.
Hope this helps!