Currently, STI offers correspondence courses by email.
You may *either* subscript to the Saturnalia substack: https://macrobius.substack.com with a paid subscription *or* opt into the free ‘Autodidact Plan’ which gives you the Autodidact Newsletter with announcements of available courses.
Sign up for The Autodidact Newsletter here: https://purl.org/autodidact/newsletter.
You can also visit our STI Course Catalogue here at Whitespace (TBD)