I echo the comments above. I believe that this is a restricted document. However, the Canadians have incorporated much of the Northern Ireland lessons learned into their Dispatches series. I would try to contact them as well. In addition, I would try to locate a copy of the UK COIN manual which should cover much of what you are looking for.

As for a book recommendation, Moloney's A Secret History of the IRA is the best book on the subject that I have read.