If you want to be able to say you know Jack, send him an email or follow one or more parts of his many-tentacled social media juggernaut:
New York, NY 10007
If you want to be bombarded with information about Jack, join his mailing list. You can get information about events (which Jack will be unlikely to attend in person), and of course advanced notice of book releases. Jack promises he will guard your private information with his life, or at least with the lives of his two minions, Harry and John.
VerticalResponse.com is a no-spam email service. If you have a spam-blocker on your email account, you may need to put firstname.lastname@example.org into your contacts or on your approved list in order to receive newsletters.