New England Region's club racing program currently consists of the Regional New England Road Racing Championship (NERRC), a SafeRacer National Racing Series weekend, and licensing schools held at New Hampshire Motorsports Park and Lime Rock Park. These events are goverened by the documents produced by SCCA nationally, as well as those published by the Northeast Division of the SCCA (NeDiv), and NER itself. Here are useful links to those items.
Don't forget that, as outlined in SCCA's rulebook [the General Competition Rules (or GCR)], every event has a set of Supplemental Regulations, which include tweaks, notices, or other pertinent information specific to the circumstances of that race weekend. You'll also find important contact information and schedules on those. Every event's "Supps" can be found at the event page on this website (under Events or Calendar), and are available at registration online or at the track.
Finally, it goes without saying, but proper personal conduct at the tracks, as is the case for visitors of any type to the facilities, is stressed. Track rules are partially listed in the Supps, and available online at the venues' websites.