Copy the link below from the calendar you want to subscribe to. Instructions how to subscribe for Google Calendar and Apple iCloud

Right now you need to subscribe to calendars individually.

The function to subscribe to a whole list, or a selection of calendars is being worked on. The idea is that you subscribe to a list and then also automatically get updates from new calendars added to that list.

If you want to get notified when it's done sign up for the newsletter.