In a few short months, Marco Jenau will be completing the three-year cycle of the Rambam’s Mishneh Torah with “Rabbi Gordon Live” as he whips along Germany’s autobahn highway. Michael Hirsch, who has been streaming Rabbi Joshua Gordon’s classes on Torah and Tanya for years, will toast the completion with a slug of coffee as he studies at dawn on the east coast of the United States. During the wine dark night in Norway, Ole Mads Sirks Vevle will tune in for a class that started in Chabad of Encino, CA, and has grown into one of Chabad.org’s most popular online video classes worldwide.