Reporters Notebook A novice’s guide to opera, Glimmerglass style As a 30-something Oneonta resident who arrived from Brooklyn three months ago, it can be somewhat difficult finding things to do that don’t involve sitting at home and watching endless amounts of anime (for more information on this, see my previous column). However, one of the first things I heard about upon arriving in Oneonta, and since I also spend a lot of time at The Freeman’s Journal office in Cooperstown,…