
In addition to what Jackie has said, subscribe to one of the weekly dog papers. they are Dog World and Our dogs. They have slightly different styles and feature writers are diferent, but they all have show results, judges reports, and Breed notes for each breed, and all the shows are advertised in them. that is all the Open and Championship events, and a lot of the Companion shows also.
I would advise asking your Newagent to order both for you for a month, and then just cancel the one you don't enjoy as much.