
If you are interested in getting into track days, you should join the N owners - Track/Autox talk group on Facebook
The group is a great resource for those who are new to track days and autocross. You can ask questions, get advice, and share your experiences with other N owners.
There is also a section on how to get started tracking your car
If you are ready to start, you can find events in the DMV area on MotorsportReg.com
That link will take you to a list of events within 240 miles of Washington DC.