The Manage Event page shows capacity and bookings at a glance, and you can export your data.
See bookings against capacity, and switch between All bookings and a Per attendee view.
Export CSV to download bookings, or Export tickets.
Open Attendance to see who actually turned up, session by session, and export the register as a CSV.
For a series, the booked count shown is for the next upcoming session; once every session has run, it shows the final session's numbers.